Home / 31,404.20-47,090.10-11,672.60

Finding the Fourth Proportional to 31,404.20, 47,090.10 and 11,672.60

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Solution

The fourth proportional to 31,404.20, 47,090.10 and 11,672.60 is: 17,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,404.20 : 47,090.10 = 11,672.60 : x
  2. Step 2: Convert to fraction form
    31,404.20/47,090.10 = 11,672.60/x
  3. Step 3: Cross multiply
    31,404.20x = 47,090.10 × 11,672.60
  4. Step 4: Simplify right side
    31,404.20x = 549,663,901.26
  5. Step 5: Solve for x
    x = 549,663,901.26/31,404.20
  6. Step 6: Final answer
    x = 17,502.88

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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.