Home / 26,489.70-39,730.14-8,720.58

Finding the Fourth Proportional to 26,489.70, 39,730.14 and 8,720.58

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Solution

The fourth proportional to 26,489.70, 39,730.14 and 8,720.58 is: 13,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,489.70 : 39,730.14 = 8,720.58 : x
  2. Step 2: Convert to fraction form
    26,489.70/39,730.14 = 8,720.58/x
  3. Step 3: Cross multiply
    26,489.70x = 39,730.14 × 8,720.58
  4. Step 4: Simplify right side
    26,489.70x = 346,469,864.28
  5. Step 5: Solve for x
    x = 346,469,864.28/26,489.70
  6. Step 6: Final answer
    x = 13,079.42

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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.