Home / 40,711.60-61,076.12-12,631.05

Finding the Fourth Proportional to 40,711.60, 61,076.12 and 12,631.05

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Solution

The fourth proportional to 40,711.60, 61,076.12 and 12,631.05 is: 18,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,711.60 : 61,076.12 = 12,631.05 : x
  2. Step 2: Convert to fraction form
    40,711.60/61,076.12 = 12,631.05/x
  3. Step 3: Cross multiply
    40,711.60x = 61,076.12 × 12,631.05
  4. Step 4: Simplify right side
    40,711.60x = 771,455,525.53
  5. Step 5: Solve for x
    x = 771,455,525.53/40,711.60
  6. Step 6: Final answer
    x = 18,949.28

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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.