Home / 18,711.74-28,017.90-11,306.18

Finding the Fourth Proportional to 18,711.74, 28,017.90 and 11,306.18

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Solution

The fourth proportional to 18,711.74, 28,017.90 and 11,306.18 is: 16,929.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.74 : 28,017.90 = 11,306.18 : x
  2. Step 2: Convert to fraction form
    18,711.74/28,017.90 = 11,306.18/x
  3. Step 3: Cross multiply
    18,711.74x = 28,017.90 × 11,306.18
  4. Step 4: Simplify right side
    18,711.74x = 316,775,420.62
  5. Step 5: Solve for x
    x = 316,775,420.62/18,711.74
  6. Step 6: Final answer
    x = 16,929.23

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1.5x scale

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.