Home / 31,414.03-47,129.82-12,707.20

Finding the Fourth Proportional to 31,414.03, 47,129.82 and 12,707.20

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Solution

The fourth proportional to 31,414.03, 47,129.82 and 12,707.20 is: 19,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,414.03 : 47,129.82 = 12,707.20 : x
  2. Step 2: Convert to fraction form
    31,414.03/47,129.82 = 12,707.20/x
  3. Step 3: Cross multiply
    31,414.03x = 47,129.82 × 12,707.20
  4. Step 4: Simplify right side
    31,414.03x = 598,888,048.70
  5. Step 5: Solve for x
    x = 598,888,048.70/31,414.03
  6. Step 6: Final answer
    x = 19,064.35

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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.