Home / 20,412.60-30,630.74-7,941.23

Finding the Fourth Proportional to 20,412.60, 30,630.74 and 7,941.23

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Solution

The fourth proportional to 20,412.60, 30,630.74 and 7,941.23 is: 11,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.60 : 30,630.74 = 7,941.23 : x
  2. Step 2: Convert to fraction form
    20,412.60/30,630.74 = 7,941.23/x
  3. Step 3: Cross multiply
    20,412.60x = 30,630.74 × 7,941.23
  4. Step 4: Simplify right side
    20,412.60x = 243,245,751.41
  5. Step 5: Solve for x
    x = 243,245,751.41/20,412.60
  6. Step 6: Final answer
    x = 11,916.45

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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.