Home / 20,349.76-28,083.36-11,397.64

Finding the Fourth Proportional to 20,349.76, 28,083.36 and 11,397.64

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Solution

The fourth proportional to 20,349.76, 28,083.36 and 11,397.64 is: 15,729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.76 : 28,083.36 = 11,397.64 : x
  2. Step 2: Convert to fraction form
    20,349.76/28,083.36 = 11,397.64/x
  3. Step 3: Cross multiply
    20,349.76x = 28,083.36 × 11,397.64
  4. Step 4: Simplify right side
    20,349.76x = 320,084,027.27
  5. Step 5: Solve for x
    x = 320,084,027.27/20,349.76
  6. Step 6: Final answer
    x = 15,729.13

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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.