Home / 21,742.90-29,998-15,026.10

Finding the Fourth Proportional to 21,742.90, 29,998 and 15,026.10

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Solution

The fourth proportional to 21,742.90, 29,998 and 15,026.10 is: 20,731.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.90 : 29,998 = 15,026.10 : x
  2. Step 2: Convert to fraction form
    21,742.90/29,998 = 15,026.10/x
  3. Step 3: Cross multiply
    21,742.90x = 29,998 × 15,026.10
  4. Step 4: Simplify right side
    21,742.90x = 450,752,947.80
  5. Step 5: Solve for x
    x = 450,752,947.80/21,742.90
  6. Step 6: Final answer
    x = 20,731.04

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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.