Home / 21,198.65-29,254.25-13,245.49

Finding the Fourth Proportional to 21,198.65, 29,254.25 and 13,245.49

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Solution

The fourth proportional to 21,198.65, 29,254.25 and 13,245.49 is: 18,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.65 : 29,254.25 = 13,245.49 : x
  2. Step 2: Convert to fraction form
    21,198.65/29,254.25 = 13,245.49/x
  3. Step 3: Cross multiply
    21,198.65x = 29,254.25 × 13,245.49
  4. Step 4: Simplify right side
    21,198.65x = 387,486,875.83
  5. Step 5: Solve for x
    x = 387,486,875.83/21,198.65
  6. Step 6: Final answer
    x = 18,278.85

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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.