Home / 21,211.68-29,270.97-12,714.13

Finding the Fourth Proportional to 21,211.68, 29,270.97 and 12,714.13

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Solution

The fourth proportional to 21,211.68, 29,270.97 and 12,714.13 is: 17,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.68 : 29,270.97 = 12,714.13 : x
  2. Step 2: Convert to fraction form
    21,211.68/29,270.97 = 12,714.13/x
  3. Step 3: Cross multiply
    21,211.68x = 29,270.97 × 12,714.13
  4. Step 4: Simplify right side
    21,211.68x = 372,154,917.81
  5. Step 5: Solve for x
    x = 372,154,917.81/21,211.68
  6. Step 6: Final answer
    x = 17,544.81

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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.