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Finding the Fourth Proportional to 26,479.74, 39,724.47 and 8,711.40

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Solution

The fourth proportional to 26,479.74, 39,724.47 and 8,711.40 is: 13,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,479.74 : 39,724.47 = 8,711.40 : x
  2. Step 2: Convert to fraction form
    26,479.74/39,724.47 = 8,711.40/x
  3. Step 3: Cross multiply
    26,479.74x = 39,724.47 × 8,711.40
  4. Step 4: Simplify right side
    26,479.74x = 346,055,747.96
  5. Step 5: Solve for x
    x = 346,055,747.96/26,479.74
  6. Step 6: Final answer
    x = 13,068.70

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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.