Home / 47,478.15-71,221.29-12,417.75

Finding the Fourth Proportional to 47,478.15, 71,221.29 and 12,417.75

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Solution

The fourth proportional to 47,478.15, 71,221.29 and 12,417.75 is: 18,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,478.15 : 71,221.29 = 12,417.75 : x
  2. Step 2: Convert to fraction form
    47,478.15/71,221.29 = 12,417.75/x
  3. Step 3: Cross multiply
    47,478.15x = 71,221.29 × 12,417.75
  4. Step 4: Simplify right side
    47,478.15x = 884,408,173.90
  5. Step 5: Solve for x
    x = 884,408,173.90/47,478.15
  6. Step 6: Final answer
    x = 18,627.69

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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.