Home / 31,630.76-47,446.10-12,919.59

Finding the Fourth Proportional to 31,630.76, 47,446.10 and 12,919.59

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Solution

The fourth proportional to 31,630.76, 47,446.10 and 12,919.59 is: 19,379.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.76 : 47,446.10 = 12,919.59 : x
  2. Step 2: Convert to fraction form
    31,630.76/47,446.10 = 12,919.59/x
  3. Step 3: Cross multiply
    31,630.76x = 47,446.10 × 12,919.59
  4. Step 4: Simplify right side
    31,630.76x = 612,984,159.10
  5. Step 5: Solve for x
    x = 612,984,159.10/31,630.76
  6. Step 6: Final answer
    x = 19,379.37

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1.5x scale

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.