Home / 22,279.96-30,747-12,209.28

Finding the Fourth Proportional to 22,279.96, 30,747 and 12,209.28

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Solution

The fourth proportional to 22,279.96, 30,747 and 12,209.28 is: 16,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.96 : 30,747 = 12,209.28 : x
  2. Step 2: Convert to fraction form
    22,279.96/30,747 = 12,209.28/x
  3. Step 3: Cross multiply
    22,279.96x = 30,747 × 12,209.28
  4. Step 4: Simplify right side
    22,279.96x = 375,398,732.16
  5. Step 5: Solve for x
    x = 375,398,732.16/22,279.96
  6. Step 6: Final answer
    x = 16,849.17

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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.