Home / 20,964.35-28,929.53-11,404.17

Finding the Fourth Proportional to 20,964.35, 28,929.53 and 11,404.17

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Solution

The fourth proportional to 20,964.35, 28,929.53 and 11,404.17 is: 15,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.35 : 28,929.53 = 11,404.17 : x
  2. Step 2: Convert to fraction form
    20,964.35/28,929.53 = 11,404.17/x
  3. Step 3: Cross multiply
    20,964.35x = 28,929.53 × 11,404.17
  4. Step 4: Simplify right side
    20,964.35x = 329,917,306.65
  5. Step 5: Solve for x
    x = 329,917,306.65/20,964.35
  6. Step 6: Final answer
    x = 15,737.06

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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.