Home / 15,304.71-21,121.53-8,590.83

Finding the Fourth Proportional to 15,304.71, 21,121.53 and 8,590.83

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Solution

The fourth proportional to 15,304.71, 21,121.53 and 8,590.83 is: 11,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.71 : 21,121.53 = 8,590.83 : x
  2. Step 2: Convert to fraction form
    15,304.71/21,121.53 = 8,590.83/x
  3. Step 3: Cross multiply
    15,304.71x = 21,121.53 × 8,590.83
  4. Step 4: Simplify right side
    15,304.71x = 181,451,473.57
  5. Step 5: Solve for x
    x = 181,451,473.57/15,304.71
  6. Step 6: Final answer
    x = 11,855.92

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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.