Home / 21,617.80-32,430.06-9,137.88

Finding the Fourth Proportional to 21,617.80, 32,430.06 and 9,137.88

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Solution

The fourth proportional to 21,617.80, 32,430.06 and 9,137.88 is: 13,708.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.80 : 32,430.06 = 9,137.88 : x
  2. Step 2: Convert to fraction form
    21,617.80/32,430.06 = 9,137.88/x
  3. Step 3: Cross multiply
    21,617.80x = 32,430.06 × 9,137.88
  4. Step 4: Simplify right side
    21,617.80x = 296,341,996.67
  5. Step 5: Solve for x
    x = 296,341,996.67/21,617.80
  6. Step 6: Final answer
    x = 13,708.24

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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.