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Finding the Fourth Proportional to 25,561.40, 38,343.40 and 8,031.40

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Solution

The fourth proportional to 25,561.40, 38,343.40 and 8,031.40 is: 12,047.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,561.40 : 38,343.40 = 8,031.40 : x
  2. Step 2: Convert to fraction form
    25,561.40/38,343.40 = 8,031.40/x
  3. Step 3: Cross multiply
    25,561.40x = 38,343.40 × 8,031.40
  4. Step 4: Simplify right side
    25,561.40x = 307,951,182.76
  5. Step 5: Solve for x
    x = 307,951,182.76/25,561.40
  6. Step 6: Final answer
    x = 12,047.51

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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.