Home / 20,683.62-28,553.31-12,732.66

Finding the Fourth Proportional to 20,683.62, 28,553.31 and 12,732.66

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Solution

The fourth proportional to 20,683.62, 28,553.31 and 12,732.66 is: 17,577.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.62 : 28,553.31 = 12,732.66 : x
  2. Step 2: Convert to fraction form
    20,683.62/28,553.31 = 12,732.66/x
  3. Step 3: Cross multiply
    20,683.62x = 28,553.31 × 12,732.66
  4. Step 4: Simplify right side
    20,683.62x = 363,559,588.10
  5. Step 5: Solve for x
    x = 363,559,588.10/20,683.62
  6. Step 6: Final answer
    x = 17,577.17

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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.