Home / 21,186.59-29,243.16-13,224.02

Finding the Fourth Proportional to 21,186.59, 29,243.16 and 13,224.02

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Solution

The fourth proportional to 21,186.59, 29,243.16 and 13,224.02 is: 18,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.59 : 29,243.16 = 13,224.02 : x
  2. Step 2: Convert to fraction form
    21,186.59/29,243.16 = 13,224.02/x
  3. Step 3: Cross multiply
    21,186.59x = 29,243.16 × 13,224.02
  4. Step 4: Simplify right side
    21,186.59x = 386,711,986.49
  5. Step 5: Solve for x
    x = 386,711,986.49/21,186.59
  6. Step 6: Final answer
    x = 18,252.68

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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.