Home / 21,161.59-29,206.23-13,508.17

Finding the Fourth Proportional to 21,161.59, 29,206.23 and 13,508.17

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Solution

The fourth proportional to 21,161.59, 29,206.23 and 13,508.17 is: 18,643.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.59 : 29,206.23 = 13,508.17 : x
  2. Step 2: Convert to fraction form
    21,161.59/29,206.23 = 13,508.17/x
  3. Step 3: Cross multiply
    21,161.59x = 29,206.23 × 13,508.17
  4. Step 4: Simplify right side
    21,161.59x = 394,522,719.90
  5. Step 5: Solve for x
    x = 394,522,719.90/21,161.59
  6. Step 6: Final answer
    x = 18,643.34

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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.