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Finding the Fourth Proportional to 18,031.40, 27,047.10 and 15,844.40

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Solution

The fourth proportional to 18,031.40, 27,047.10 and 15,844.40 is: 23,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.40 : 27,047.10 = 15,844.40 : x
  2. Step 2: Convert to fraction form
    18,031.40/27,047.10 = 15,844.40/x
  3. Step 3: Cross multiply
    18,031.40x = 27,047.10 × 15,844.40
  4. Step 4: Simplify right side
    18,031.40x = 428,545,071.24
  5. Step 5: Solve for x
    x = 428,545,071.24/18,031.40
  6. Step 6: Final answer
    x = 23,766.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.