Home / 26,311.90-39,468.20-8,781.72

Finding the Fourth Proportional to 26,311.90, 39,468.20 and 8,781.72

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Solution

The fourth proportional to 26,311.90, 39,468.20 and 8,781.72 is: 13,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,311.90 : 39,468.20 = 8,781.72 : x
  2. Step 2: Convert to fraction form
    26,311.90/39,468.20 = 8,781.72/x
  3. Step 3: Cross multiply
    26,311.90x = 39,468.20 × 8,781.72
  4. Step 4: Simplify right side
    26,311.90x = 346,598,637.40
  5. Step 5: Solve for x
    x = 346,598,637.40/26,311.90
  6. Step 6: Final answer
    x = 13,172.70

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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.