Home / 10,513.40-15,773.39-3,117.90

Finding the Fourth Proportional to 10,513.40, 15,773.39 and 3,117.90

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Solution

The fourth proportional to 10,513.40, 15,773.39 and 3,117.90 is: 4,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.40 : 15,773.39 = 3,117.90 : x
  2. Step 2: Convert to fraction form
    10,513.40/15,773.39 = 3,117.90/x
  3. Step 3: Cross multiply
    10,513.40x = 15,773.39 × 3,117.90
  4. Step 4: Simplify right side
    10,513.40x = 49,179,837.09
  5. Step 5: Solve for x
    x = 49,179,837.09/10,513.40
  6. Step 6: Final answer
    x = 4,677.82

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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.