Home / 31,512.88-47,264.46-13,979.62

Finding the Fourth Proportional to 31,512.88, 47,264.46 and 13,979.62

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Solution

The fourth proportional to 31,512.88, 47,264.46 and 13,979.62 is: 20,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512.88 : 47,264.46 = 13,979.62 : x
  2. Step 2: Convert to fraction form
    31,512.88/47,264.46 = 13,979.62/x
  3. Step 3: Cross multiply
    31,512.88x = 47,264.46 × 13,979.62
  4. Step 4: Simplify right side
    31,512.88x = 660,739,190.31
  5. Step 5: Solve for x
    x = 660,739,190.31/31,512.88
  6. Step 6: Final answer
    x = 20,967.27

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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.