Home / 47,715.52-71,567.81-12,657.91

Finding the Fourth Proportional to 47,715.52, 71,567.81 and 12,657.91

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Solution

The fourth proportional to 47,715.52, 71,567.81 and 12,657.91 is: 18,985.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,715.52 : 71,567.81 = 12,657.91 : x
  2. Step 2: Convert to fraction form
    47,715.52/71,567.81 = 12,657.91/x
  3. Step 3: Cross multiply
    47,715.52x = 71,567.81 × 12,657.91
  4. Step 4: Simplify right side
    47,715.52x = 905,898,476.75
  5. Step 5: Solve for x
    x = 905,898,476.75/47,715.52
  6. Step 6: Final answer
    x = 18,985.41

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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.