Home / 48,492.15-72,738.21-13,431.80

Finding the Fourth Proportional to 48,492.15, 72,738.21 and 13,431.80

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Solution

The fourth proportional to 48,492.15, 72,738.21 and 13,431.80 is: 20,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,492.15 : 72,738.21 = 13,431.80 : x
  2. Step 2: Convert to fraction form
    48,492.15/72,738.21 = 13,431.80/x
  3. Step 3: Cross multiply
    48,492.15x = 72,738.21 × 13,431.80
  4. Step 4: Simplify right side
    48,492.15x = 977,005,321.29
  5. Step 5: Solve for x
    x = 977,005,321.29/48,492.15
  6. Step 6: Final answer
    x = 20,147.70

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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.