Home / 21,387.68-32,200.40-18,530

Finding the Fourth Proportional to 21,387.68, 32,200.40 and 18,530

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Solution

The fourth proportional to 21,387.68, 32,200.40 and 18,530 is: 27,898.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.68 : 32,200.40 = 18,530 : x
  2. Step 2: Convert to fraction form
    21,387.68/32,200.40 = 18,530/x
  3. Step 3: Cross multiply
    21,387.68x = 32,200.40 × 18,530
  4. Step 4: Simplify right side
    21,387.68x = 596,673,412
  5. Step 5: Solve for x
    x = 596,673,412/21,387.68
  6. Step 6: Final answer
    x = 27,898.00

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.