Home / 21,555.18-32,332.80-6,765.24

Finding the Fourth Proportional to 21,555.18, 32,332.80 and 6,765.24

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Solution

The fourth proportional to 21,555.18, 32,332.80 and 6,765.24 is: 10,147.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.18 : 32,332.80 = 6,765.24 : x
  2. Step 2: Convert to fraction form
    21,555.18/32,332.80 = 6,765.24/x
  3. Step 3: Cross multiply
    21,555.18x = 32,332.80 × 6,765.24
  4. Step 4: Simplify right side
    21,555.18x = 218,739,151.87
  5. Step 5: Solve for x
    x = 218,739,151.87/21,555.18
  6. Step 6: Final answer
    x = 10,147.87

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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.