Home / 26,426.79-39,639.14-8,658.78

Finding the Fourth Proportional to 26,426.79, 39,639.14 and 8,658.78

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Solution

The fourth proportional to 26,426.79, 39,639.14 and 8,658.78 is: 12,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,426.79 : 39,639.14 = 8,658.78 : x
  2. Step 2: Convert to fraction form
    26,426.79/39,639.14 = 8,658.78/x
  3. Step 3: Cross multiply
    26,426.79x = 39,639.14 × 8,658.78
  4. Step 4: Simplify right side
    26,426.79x = 343,226,614.30
  5. Step 5: Solve for x
    x = 343,226,614.30/26,426.79
  6. Step 6: Final answer
    x = 12,987.83

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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.