Home / 31,480.30-47,209.10-10,416.45

Finding the Fourth Proportional to 31,480.30, 47,209.10 and 10,416.45

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Solution

The fourth proportional to 31,480.30, 47,209.10 and 10,416.45 is: 15,620.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.30 : 47,209.10 = 10,416.45 : x
  2. Step 2: Convert to fraction form
    31,480.30/47,209.10 = 10,416.45/x
  3. Step 3: Cross multiply
    31,480.30x = 47,209.10 × 10,416.45
  4. Step 4: Simplify right side
    31,480.30x = 491,751,176.98
  5. Step 5: Solve for x
    x = 491,751,176.98/31,480.30
  6. Step 6: Final answer
    x = 15,620.92

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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.