Home / 31,515.60-47,269.56-8,140.08

Finding the Fourth Proportional to 31,515.60, 47,269.56 and 8,140.08

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Solution

The fourth proportional to 31,515.60, 47,269.56 and 8,140.08 is: 12,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.60 : 47,269.56 = 8,140.08 : x
  2. Step 2: Convert to fraction form
    31,515.60/47,269.56 = 8,140.08/x
  3. Step 3: Cross multiply
    31,515.60x = 47,269.56 × 8,140.08
  4. Step 4: Simplify right side
    31,515.60x = 384,777,999.96
  5. Step 5: Solve for x
    x = 384,777,999.96/31,515.60
  6. Step 6: Final answer
    x = 12,209.13

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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.