Home / 31,740.72-47,611.68-8,366.28

Finding the Fourth Proportional to 31,740.72, 47,611.68 and 8,366.28

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Solution

The fourth proportional to 31,740.72, 47,611.68 and 8,366.28 is: 12,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.72 : 47,611.68 = 8,366.28 : x
  2. Step 2: Convert to fraction form
    31,740.72/47,611.68 = 8,366.28/x
  3. Step 3: Cross multiply
    31,740.72x = 47,611.68 × 8,366.28
  4. Step 4: Simplify right side
    31,740.72x = 398,332,646.15
  5. Step 5: Solve for x
    x = 398,332,646.15/31,740.72
  6. Step 6: Final answer
    x = 12,549.58

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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.