Home / 16,115.64-22,221.56-10,140

Finding the Fourth Proportional to 16,115.64, 22,221.56 and 10,140

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Solution

The fourth proportional to 16,115.64, 22,221.56 and 10,140 is: 13,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,115.64 : 22,221.56 = 10,140 : x
  2. Step 2: Convert to fraction form
    16,115.64/22,221.56 = 10,140/x
  3. Step 3: Cross multiply
    16,115.64x = 22,221.56 × 10,140
  4. Step 4: Simplify right side
    16,115.64x = 225,326,618.40
  5. Step 5: Solve for x
    x = 225,326,618.40/16,115.64
  6. Step 6: Final answer
    x = 13,981.86

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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.