Home / 31,580.28-47,372.45-12,850.09

Finding the Fourth Proportional to 31,580.28, 47,372.45 and 12,850.09

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Solution

The fourth proportional to 31,580.28, 47,372.45 and 12,850.09 is: 19,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,580.28 : 47,372.45 = 12,850.09 : x
  2. Step 2: Convert to fraction form
    31,580.28/47,372.45 = 12,850.09/x
  3. Step 3: Cross multiply
    31,580.28x = 47,372.45 × 12,850.09
  4. Step 4: Simplify right side
    31,580.28x = 608,740,329.81
  5. Step 5: Solve for x
    x = 608,740,329.81/31,580.28
  6. Step 6: Final answer
    x = 19,275.96

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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.