Home / 31,436.20-47,153.09-10,659.70

Finding the Fourth Proportional to 31,436.20, 47,153.09 and 10,659.70

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Solution

The fourth proportional to 31,436.20, 47,153.09 and 10,659.70 is: 15,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,436.20 : 47,153.09 = 10,659.70 : x
  2. Step 2: Convert to fraction form
    31,436.20/47,153.09 = 10,659.70/x
  3. Step 3: Cross multiply
    31,436.20x = 47,153.09 × 10,659.70
  4. Step 4: Simplify right side
    31,436.20x = 502,637,819.10
  5. Step 5: Solve for x
    x = 502,637,819.10/31,436.20
  6. Step 6: Final answer
    x = 15,989.14

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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.