Home / 38,397.78-52,989.20-21,403.12

Finding the Fourth Proportional to 38,397.78, 52,989.20 and 21,403.12

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Solution

The fourth proportional to 38,397.78, 52,989.20 and 21,403.12 is: 29,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,397.78 : 52,989.20 = 21,403.12 : x
  2. Step 2: Convert to fraction form
    38,397.78/52,989.20 = 21,403.12/x
  3. Step 3: Cross multiply
    38,397.78x = 52,989.20 × 21,403.12
  4. Step 4: Simplify right side
    38,397.78x = 1,134,134,206.30
  5. Step 5: Solve for x
    x = 1,134,134,206.30/38,397.78
  6. Step 6: Final answer
    x = 29,536.45

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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.