Home / 28,147-38,839.50-15,570.04

Finding the Fourth Proportional to 28,147, 38,839.50 and 15,570.04

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Solution

The fourth proportional to 28,147, 38,839.50 and 15,570.04 is: 21,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147 : 38,839.50 = 15,570.04 : x
  2. Step 2: Convert to fraction form
    28,147/38,839.50 = 15,570.04/x
  3. Step 3: Cross multiply
    28,147x = 38,839.50 × 15,570.04
  4. Step 4: Simplify right side
    28,147x = 604,732,568.58
  5. Step 5: Solve for x
    x = 604,732,568.58/28,147
  6. Step 6: Final answer
    x = 21,484.80

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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.