Home / 21,153.60-31,732.02-5,571

Finding the Fourth Proportional to 21,153.60, 31,732.02 and 5,571

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Solution

The fourth proportional to 21,153.60, 31,732.02 and 5,571 is: 8,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.60 : 31,732.02 = 5,571 : x
  2. Step 2: Convert to fraction form
    21,153.60/31,732.02 = 5,571/x
  3. Step 3: Cross multiply
    21,153.60x = 31,732.02 × 5,571
  4. Step 4: Simplify right side
    21,153.60x = 176,779,083.42
  5. Step 5: Solve for x
    x = 176,779,083.42/21,153.60
  6. Step 6: Final answer
    x = 8,356.93

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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.