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Finding the Fourth Proportional to 21,562.31, 32,343.47 and 5,979.94

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Solution

The fourth proportional to 21,562.31, 32,343.47 and 5,979.94 is: 8,969.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.31 : 32,343.47 = 5,979.94 : x
  2. Step 2: Convert to fraction form
    21,562.31/32,343.47 = 5,979.94/x
  3. Step 3: Cross multiply
    21,562.31x = 32,343.47 × 5,979.94
  4. Step 4: Simplify right side
    21,562.31x = 193,411,921.66
  5. Step 5: Solve for x
    x = 193,411,921.66/21,562.31
  6. Step 6: Final answer
    x = 8,969.91

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1.5x scale

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.