Home / 18,221.81-25,146.18-11,510.43

Finding the Fourth Proportional to 18,221.81, 25,146.18 and 11,510.43

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Solution

The fourth proportional to 18,221.81, 25,146.18 and 11,510.43 is: 15,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.81 : 25,146.18 = 11,510.43 : x
  2. Step 2: Convert to fraction form
    18,221.81/25,146.18 = 11,510.43/x
  3. Step 3: Cross multiply
    18,221.81x = 25,146.18 × 11,510.43
  4. Step 4: Simplify right side
    18,221.81x = 289,443,344.66
  5. Step 5: Solve for x
    x = 289,443,344.66/18,221.81
  6. Step 6: Final answer
    x = 15,884.45

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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.