Home / 31,520.40-47,286.20-10,461.70

Finding the Fourth Proportional to 31,520.40, 47,286.20 and 10,461.70

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Solution

The fourth proportional to 31,520.40, 47,286.20 and 10,461.70 is: 15,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,520.40 : 47,286.20 = 10,461.70 : x
  2. Step 2: Convert to fraction form
    31,520.40/47,286.20 = 10,461.70/x
  3. Step 3: Cross multiply
    31,520.40x = 47,286.20 × 10,461.70
  4. Step 4: Simplify right side
    31,520.40x = 494,694,038.54
  5. Step 5: Solve for x
    x = 494,694,038.54/31,520.40
  6. Step 6: Final answer
    x = 15,694.41

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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.