Home / 21,117.16-29,115.18-15,447.34

Finding the Fourth Proportional to 21,117.16, 29,115.18 and 15,447.34

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Solution

The fourth proportional to 21,117.16, 29,115.18 and 15,447.34 is: 21,297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.16 : 29,115.18 = 15,447.34 : x
  2. Step 2: Convert to fraction form
    21,117.16/29,115.18 = 15,447.34/x
  3. Step 3: Cross multiply
    21,117.16x = 29,115.18 × 15,447.34
  4. Step 4: Simplify right side
    21,117.16x = 449,752,084.62
  5. Step 5: Solve for x
    x = 449,752,084.62/21,117.16
  6. Step 6: Final answer
    x = 21,297.94

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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.