Home / 43,138.82-64,711.02-13,557.90

Finding the Fourth Proportional to 43,138.82, 64,711.02 and 13,557.90

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Solution

The fourth proportional to 43,138.82, 64,711.02 and 13,557.90 is: 20,337.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,138.82 : 64,711.02 = 13,557.90 : x
  2. Step 2: Convert to fraction form
    43,138.82/64,711.02 = 13,557.90/x
  3. Step 3: Cross multiply
    43,138.82x = 64,711.02 × 13,557.90
  4. Step 4: Simplify right side
    43,138.82x = 877,345,538.06
  5. Step 5: Solve for x
    x = 877,345,538.06/43,138.82
  6. Step 6: Final answer
    x = 20,337.73

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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.