Home / 20,318.60-28,045.30-11,822.36

Finding the Fourth Proportional to 20,318.60, 28,045.30 and 11,822.36

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Solution

The fourth proportional to 20,318.60, 28,045.30 and 11,822.36 is: 16,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.60 : 28,045.30 = 11,822.36 : x
  2. Step 2: Convert to fraction form
    20,318.60/28,045.30 = 11,822.36/x
  3. Step 3: Cross multiply
    20,318.60x = 28,045.30 × 11,822.36
  4. Step 4: Simplify right side
    20,318.60x = 331,561,732.58
  5. Step 5: Solve for x
    x = 331,561,732.58/20,318.60
  6. Step 6: Final answer
    x = 16,318.14

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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.