Home / 21,525.48-29,694.33-18,689.00

Finding the Fourth Proportional to 21,525.48, 29,694.33 and 18,689.00

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Solution

The fourth proportional to 21,525.48, 29,694.33 and 18,689.00 is: 25,781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.48 : 29,694.33 = 18,689.00 : x
  2. Step 2: Convert to fraction form
    21,525.48/29,694.33 = 18,689.00/x
  3. Step 3: Cross multiply
    21,525.48x = 29,694.33 × 18,689.00
  4. Step 4: Simplify right side
    21,525.48x = 554,957,184.90
  5. Step 5: Solve for x
    x = 554,957,184.90/21,525.48
  6. Step 6: Final answer
    x = 25,781.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.