Home / 21,829.28-32,746.02-8,678.70

Finding the Fourth Proportional to 21,829.28, 32,746.02 and 8,678.70

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Solution

The fourth proportional to 21,829.28, 32,746.02 and 8,678.70 is: 13,018.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.28 : 32,746.02 = 8,678.70 : x
  2. Step 2: Convert to fraction form
    21,829.28/32,746.02 = 8,678.70/x
  3. Step 3: Cross multiply
    21,829.28x = 32,746.02 × 8,678.70
  4. Step 4: Simplify right side
    21,829.28x = 284,192,883.77
  5. Step 5: Solve for x
    x = 284,192,883.77/21,829.28
  6. Step 6: Final answer
    x = 13,018.88

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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.