Home / 47,715.40-71,573.10-12,658.60

Finding the Fourth Proportional to 47,715.40, 71,573.10 and 12,658.60

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Solution

The fourth proportional to 47,715.40, 71,573.10 and 12,658.60 is: 18,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,715.40 : 71,573.10 = 12,658.60 : x
  2. Step 2: Convert to fraction form
    47,715.40/71,573.10 = 12,658.60/x
  3. Step 3: Cross multiply
    47,715.40x = 71,573.10 × 12,658.60
  4. Step 4: Simplify right side
    47,715.40x = 906,015,243.66
  5. Step 5: Solve for x
    x = 906,015,243.66/47,715.40
  6. Step 6: Final answer
    x = 18,987.90

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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.