Home / 28,780.29-39,717.90-16,681.17

Finding the Fourth Proportional to 28,780.29, 39,717.90 and 16,681.17

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Solution

The fourth proportional to 28,780.29, 39,717.90 and 16,681.17 is: 23,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.29 : 39,717.90 = 16,681.17 : x
  2. Step 2: Convert to fraction form
    28,780.29/39,717.90 = 16,681.17/x
  3. Step 3: Cross multiply
    28,780.29x = 39,717.90 × 16,681.17
  4. Step 4: Simplify right side
    28,780.29x = 662,540,825.05
  5. Step 5: Solve for x
    x = 662,540,825.05/28,780.29
  6. Step 6: Final answer
    x = 23,020.65

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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.