Home / 31,954.13-47,931.50-8,580.57

Finding the Fourth Proportional to 31,954.13, 47,931.50 and 8,580.57

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Solution

The fourth proportional to 31,954.13, 47,931.50 and 8,580.57 is: 12,870.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,954.13 : 47,931.50 = 8,580.57 : x
  2. Step 2: Convert to fraction form
    31,954.13/47,931.50 = 8,580.57/x
  3. Step 3: Cross multiply
    31,954.13x = 47,931.50 × 8,580.57
  4. Step 4: Simplify right side
    31,954.13x = 411,279,590.96
  5. Step 5: Solve for x
    x = 411,279,590.96/31,954.13
  6. Step 6: Final answer
    x = 12,870.94

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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.