Home / 38,705.81-53,418.28-21,711.71

Finding the Fourth Proportional to 38,705.81, 53,418.28 and 21,711.71

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Solution

The fourth proportional to 38,705.81, 53,418.28 and 21,711.71 is: 29,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,705.81 : 53,418.28 = 21,711.71 : x
  2. Step 2: Convert to fraction form
    38,705.81/53,418.28 = 21,711.71/x
  3. Step 3: Cross multiply
    38,705.81x = 53,418.28 × 21,711.71
  4. Step 4: Simplify right side
    38,705.81x = 1,159,801,882.69
  5. Step 5: Solve for x
    x = 1,159,801,882.69/38,705.81
  6. Step 6: Final answer
    x = 29,964.55

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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.