Home / 21,689.27-32,490.92-16,987.37

Finding the Fourth Proportional to 21,689.27, 32,490.92 and 16,987.37

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Solution

The fourth proportional to 21,689.27, 32,490.92 and 16,987.37 is: 25,447.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689.27 : 32,490.92 = 16,987.37 : x
  2. Step 2: Convert to fraction form
    21,689.27/32,490.92 = 16,987.37/x
  3. Step 3: Cross multiply
    21,689.27x = 32,490.92 × 16,987.37
  4. Step 4: Simplify right side
    21,689.27x = 551,935,342.46
  5. Step 5: Solve for x
    x = 551,935,342.46/21,689.27
  6. Step 6: Final answer
    x = 25,447.39

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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.