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Finding the Fourth Proportional to 25,871.76, 38,803.68 and 8,339.76

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Solution

The fourth proportional to 25,871.76, 38,803.68 and 8,339.76 is: 12,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,871.76 : 38,803.68 = 8,339.76 : x
  2. Step 2: Convert to fraction form
    25,871.76/38,803.68 = 8,339.76/x
  3. Step 3: Cross multiply
    25,871.76x = 38,803.68 × 8,339.76
  4. Step 4: Simplify right side
    25,871.76x = 323,613,378.32
  5. Step 5: Solve for x
    x = 323,613,378.32/25,871.76
  6. Step 6: Final answer
    x = 12,508.36

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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.