Home / 20,068.82-30,122.67-9,687.86

Finding the Fourth Proportional to 20,068.82, 30,122.67 and 9,687.86

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Solution

The fourth proportional to 20,068.82, 30,122.67 and 9,687.86 is: 14,541.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.82 : 30,122.67 = 9,687.86 : x
  2. Step 2: Convert to fraction form
    20,068.82/30,122.67 = 9,687.86/x
  3. Step 3: Cross multiply
    20,068.82x = 30,122.67 × 9,687.86
  4. Step 4: Simplify right side
    20,068.82x = 291,824,209.79
  5. Step 5: Solve for x
    x = 291,824,209.79/20,068.82
  6. Step 6: Final answer
    x = 14,541.17

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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.