Home / 38,312.80-52,869.92-21,315.69

Finding the Fourth Proportional to 38,312.80, 52,869.92 and 21,315.69

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Solution

The fourth proportional to 38,312.80, 52,869.92 and 21,315.69 is: 29,414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,312.80 : 52,869.92 = 21,315.69 : x
  2. Step 2: Convert to fraction form
    38,312.80/52,869.92 = 21,315.69/x
  3. Step 3: Cross multiply
    38,312.80x = 52,869.92 × 21,315.69
  4. Step 4: Simplify right side
    38,312.80x = 1,126,958,718.47
  5. Step 5: Solve for x
    x = 1,126,958,718.47/38,312.80
  6. Step 6: Final answer
    x = 29,414.68

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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.