Home / 10,361.20-15,541.80-4,122.70

Finding the Fourth Proportional to 10,361.20, 15,541.80 and 4,122.70

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Solution

The fourth proportional to 10,361.20, 15,541.80 and 4,122.70 is: 6,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361.20 : 15,541.80 = 4,122.70 : x
  2. Step 2: Convert to fraction form
    10,361.20/15,541.80 = 4,122.70/x
  3. Step 3: Cross multiply
    10,361.20x = 15,541.80 × 4,122.70
  4. Step 4: Simplify right side
    10,361.20x = 64,074,178.86
  5. Step 5: Solve for x
    x = 64,074,178.86/10,361.20
  6. Step 6: Final answer
    x = 6,184.05

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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.