Home / 47,711.90-71,567.85-12,655.10

Finding the Fourth Proportional to 47,711.90, 71,567.85 and 12,655.10

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Solution

The fourth proportional to 47,711.90, 71,567.85 and 12,655.10 is: 18,982.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,711.90 : 71,567.85 = 12,655.10 : x
  2. Step 2: Convert to fraction form
    47,711.90/71,567.85 = 12,655.10/x
  3. Step 3: Cross multiply
    47,711.90x = 71,567.85 × 12,655.10
  4. Step 4: Simplify right side
    47,711.90x = 905,698,298.54
  5. Step 5: Solve for x
    x = 905,698,298.54/47,711.90
  6. Step 6: Final answer
    x = 18,982.65

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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.