Home / 48,480.89-72,722.57-13,420.85

Finding the Fourth Proportional to 48,480.89, 72,722.57 and 13,420.85

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Solution

The fourth proportional to 48,480.89, 72,722.57 and 13,420.85 is: 20,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,480.89 : 72,722.57 = 13,420.85 : x
  2. Step 2: Convert to fraction form
    48,480.89/72,722.57 = 13,420.85/x
  3. Step 3: Cross multiply
    48,480.89x = 72,722.57 × 13,420.85
  4. Step 4: Simplify right side
    48,480.89x = 975,998,272.87
  5. Step 5: Solve for x
    x = 975,998,272.87/48,480.89
  6. Step 6: Final answer
    x = 20,131.61

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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.