Home / 10,152,420.60-15,228,630.90-7,129,111.80

Finding the Fourth Proportional to 10,152,420.60, 15,228,630.90 and 7,129,111.80

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Solution

The fourth proportional to 10,152,420.60, 15,228,630.90 and 7,129,111.80 is: 10,693,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,152,420.60 : 15,228,630.90 = 7,129,111.80 : x
  2. Step 2: Convert to fraction form
    10,152,420.60/15,228,630.90 = 7,129,111.80/x
  3. Step 3: Cross multiply
    10,152,420.60x = 15,228,630.90 × 7,129,111.80
  4. Step 4: Simplify right side
    10,152,420.60x = 108,566,612,247,034.62
  5. Step 5: Solve for x
    x = 108,566,612,247,034.62/10,152,420.60
  6. Step 6: Final answer
    x = 10,693,667.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.