Home / 26,642.68-36,768.12-15,315.85

Finding the Fourth Proportional to 26,642.68, 36,768.12 and 15,315.85

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Solution

The fourth proportional to 26,642.68, 36,768.12 and 15,315.85 is: 21,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,642.68 : 36,768.12 = 15,315.85 : x
  2. Step 2: Convert to fraction form
    26,642.68/36,768.12 = 15,315.85/x
  3. Step 3: Cross multiply
    26,642.68x = 36,768.12 × 15,315.85
  4. Step 4: Simplify right side
    26,642.68x = 563,135,010.70
  5. Step 5: Solve for x
    x = 563,135,010.70/26,642.68
  6. Step 6: Final answer
    x = 21,136.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.