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Finding the Fourth Proportional to 25,979.84, 38,969.76 and 7,511.84

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Solution

The fourth proportional to 25,979.84, 38,969.76 and 7,511.84 is: 11,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,979.84 : 38,969.76 = 7,511.84 : x
  2. Step 2: Convert to fraction form
    25,979.84/38,969.76 = 7,511.84/x
  3. Step 3: Cross multiply
    25,979.84x = 38,969.76 × 7,511.84
  4. Step 4: Simplify right side
    25,979.84x = 292,734,601.96
  5. Step 5: Solve for x
    x = 292,734,601.96/25,979.84
  6. Step 6: Final answer
    x = 11,267.76

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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.