Home / 31,514.13-47,272.01-8,140.50

Finding the Fourth Proportional to 31,514.13, 47,272.01 and 8,140.50

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Solution

The fourth proportional to 31,514.13, 47,272.01 and 8,140.50 is: 12,210.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.13 : 47,272.01 = 8,140.50 : x
  2. Step 2: Convert to fraction form
    31,514.13/47,272.01 = 8,140.50/x
  3. Step 3: Cross multiply
    31,514.13x = 47,272.01 × 8,140.50
  4. Step 4: Simplify right side
    31,514.13x = 384,817,756.70
  5. Step 5: Solve for x
    x = 384,817,756.70/31,514.13
  6. Step 6: Final answer
    x = 12,210.96

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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.