Home / 13,045.86-18,002.79-7,077.33

Finding the Fourth Proportional to 13,045.86, 18,002.79 and 7,077.33

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Solution

The fourth proportional to 13,045.86, 18,002.79 and 7,077.33 is: 9,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.86 : 18,002.79 = 7,077.33 : x
  2. Step 2: Convert to fraction form
    13,045.86/18,002.79 = 7,077.33/x
  3. Step 3: Cross multiply
    13,045.86x = 18,002.79 × 7,077.33
  4. Step 4: Simplify right side
    13,045.86x = 127,411,685.75
  5. Step 5: Solve for x
    x = 127,411,685.75/13,045.86
  6. Step 6: Final answer
    x = 9,766.45

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.