Home / 21,829.87-32,717.40-9,335.20

Finding the Fourth Proportional to 21,829.87, 32,717.40 and 9,335.20

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Solution

The fourth proportional to 21,829.87, 32,717.40 and 9,335.20 is: 13,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.87 : 32,717.40 = 9,335.20 : x
  2. Step 2: Convert to fraction form
    21,829.87/32,717.40 = 9,335.20/x
  3. Step 3: Cross multiply
    21,829.87x = 32,717.40 × 9,335.20
  4. Step 4: Simplify right side
    21,829.87x = 305,423,472.48
  5. Step 5: Solve for x
    x = 305,423,472.48/21,829.87
  6. Step 6: Final answer
    x = 13,991.08

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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.