Home / 21,810.26-32,687.51-18,987.50

Finding the Fourth Proportional to 21,810.26, 32,687.51 and 18,987.50

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Solution

The fourth proportional to 21,810.26, 32,687.51 and 18,987.50 is: 28,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.26 : 32,687.51 = 18,987.50 : x
  2. Step 2: Convert to fraction form
    21,810.26/32,687.51 = 18,987.50/x
  3. Step 3: Cross multiply
    21,810.26x = 32,687.51 × 18,987.50
  4. Step 4: Simplify right side
    21,810.26x = 620,654,082.91
  5. Step 5: Solve for x
    x = 620,654,082.91/21,810.26
  6. Step 6: Final answer
    x = 28,456.97

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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.