Home / 10,111.20-15,161.40-4,261.20

Finding the Fourth Proportional to 10,111.20, 15,161.40 and 4,261.20

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Solution

The fourth proportional to 10,111.20, 15,161.40 and 4,261.20 is: 6,389.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,111.20 : 15,161.40 = 4,261.20 : x
  2. Step 2: Convert to fraction form
    10,111.20/15,161.40 = 4,261.20/x
  3. Step 3: Cross multiply
    10,111.20x = 15,161.40 × 4,261.20
  4. Step 4: Simplify right side
    10,111.20x = 64,605,757.68
  5. Step 5: Solve for x
    x = 64,605,757.68/10,111.20
  6. Step 6: Final answer
    x = 6,389.52

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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.