Home / 26,132.91-39,148.34-20,878.85

Finding the Fourth Proportional to 26,132.91, 39,148.34 and 20,878.85

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Solution

The fourth proportional to 26,132.91, 39,148.34 and 20,878.85 is: 31,277.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,132.91 : 39,148.34 = 20,878.85 : x
  2. Step 2: Convert to fraction form
    26,132.91/39,148.34 = 20,878.85/x
  3. Step 3: Cross multiply
    26,132.91x = 39,148.34 × 20,878.85
  4. Step 4: Simplify right side
    26,132.91x = 817,372,018.47
  5. Step 5: Solve for x
    x = 817,372,018.47/26,132.91
  6. Step 6: Final answer
    x = 31,277.50

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Double scale
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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.