Home / 21,196.74-29,245.56-13,247.04

Finding the Fourth Proportional to 21,196.74, 29,245.56 and 13,247.04

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Solution

The fourth proportional to 21,196.74, 29,245.56 and 13,247.04 is: 18,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.74 : 29,245.56 = 13,247.04 : x
  2. Step 2: Convert to fraction form
    21,196.74/29,245.56 = 13,247.04/x
  3. Step 3: Cross multiply
    21,196.74x = 29,245.56 × 13,247.04
  4. Step 4: Simplify right side
    21,196.74x = 387,417,103.14
  5. Step 5: Solve for x
    x = 387,417,103.14/21,196.74
  6. Step 6: Final answer
    x = 18,277.20

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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.