Home / 21,052.95-31,576.02-8,572.47

Finding the Fourth Proportional to 21,052.95, 31,576.02 and 8,572.47

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Solution

The fourth proportional to 21,052.95, 31,576.02 and 8,572.47 is: 12,857.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.95 : 31,576.02 = 8,572.47 : x
  2. Step 2: Convert to fraction form
    21,052.95/31,576.02 = 8,572.47/x
  3. Step 3: Cross multiply
    21,052.95x = 31,576.02 × 8,572.47
  4. Step 4: Simplify right side
    21,052.95x = 270,684,484.17
  5. Step 5: Solve for x
    x = 270,684,484.17/21,052.95
  6. Step 6: Final answer
    x = 12,857.32

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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.