Home / 21,535.47-29,720.18-12,104.64

Finding the Fourth Proportional to 21,535.47, 29,720.18 and 12,104.64

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Solution

The fourth proportional to 21,535.47, 29,720.18 and 12,104.64 is: 16,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.47 : 29,720.18 = 12,104.64 : x
  2. Step 2: Convert to fraction form
    21,535.47/29,720.18 = 12,104.64/x
  3. Step 3: Cross multiply
    21,535.47x = 29,720.18 × 12,104.64
  4. Step 4: Simplify right side
    21,535.47x = 359,752,109.90
  5. Step 5: Solve for x
    x = 359,752,109.90/21,535.47
  6. Step 6: Final answer
    x = 16,705.10

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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.