Home / 18,870.15-28,264.92-14,377.89

Finding the Fourth Proportional to 18,870.15, 28,264.92 and 14,377.89

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Solution

The fourth proportional to 18,870.15, 28,264.92 and 14,377.89 is: 21,536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.15 : 28,264.92 = 14,377.89 : x
  2. Step 2: Convert to fraction form
    18,870.15/28,264.92 = 14,377.89/x
  3. Step 3: Cross multiply
    18,870.15x = 28,264.92 × 14,377.89
  4. Step 4: Simplify right side
    18,870.15x = 406,389,839.96
  5. Step 5: Solve for x
    x = 406,389,839.96/18,870.15
  6. Step 6: Final answer
    x = 21,536.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.