Home / 20,397.93-28,151.95-11,445.97

Finding the Fourth Proportional to 20,397.93, 28,151.95 and 11,445.97

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Solution

The fourth proportional to 20,397.93, 28,151.95 and 11,445.97 is: 15,797.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.93 : 28,151.95 = 11,445.97 : x
  2. Step 2: Convert to fraction form
    20,397.93/28,151.95 = 11,445.97/x
  3. Step 3: Cross multiply
    20,397.93x = 28,151.95 × 11,445.97
  4. Step 4: Simplify right side
    20,397.93x = 322,226,276.15
  5. Step 5: Solve for x
    x = 322,226,276.15/20,397.93
  6. Step 6: Final answer
    x = 15,797.01

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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.