Home / 38,397.28-52,981.82-21,397.79

Finding the Fourth Proportional to 38,397.28, 52,981.82 and 21,397.79

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Solution

The fourth proportional to 38,397.28, 52,981.82 and 21,397.79 is: 29,525.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,397.28 : 52,981.82 = 21,397.79 : x
  2. Step 2: Convert to fraction form
    38,397.28/52,981.82 = 21,397.79/x
  3. Step 3: Cross multiply
    38,397.28x = 52,981.82 × 21,397.79
  4. Step 4: Simplify right side
    38,397.28x = 1,133,693,963.89
  5. Step 5: Solve for x
    x = 1,133,693,963.89/38,397.28
  6. Step 6: Final answer
    x = 29,525.37

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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.