Home / 13,646.24-20,478.76-4,761.65

Finding the Fourth Proportional to 13,646.24, 20,478.76 and 4,761.65

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Solution

The fourth proportional to 13,646.24, 20,478.76 and 4,761.65 is: 7,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.24 : 20,478.76 = 4,761.65 : x
  2. Step 2: Convert to fraction form
    13,646.24/20,478.76 = 4,761.65/x
  3. Step 3: Cross multiply
    13,646.24x = 20,478.76 × 4,761.65
  4. Step 4: Simplify right side
    13,646.24x = 97,512,726.85
  5. Step 5: Solve for x
    x = 97,512,726.85/13,646.24
  6. Step 6: Final answer
    x = 7,145.76

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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.