Home / 10,014.15-15,018.11-3,438.78

Finding the Fourth Proportional to 10,014.15, 15,018.11 and 3,438.78

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Solution

The fourth proportional to 10,014.15, 15,018.11 and 3,438.78 is: 5,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,014.15 : 15,018.11 = 3,438.78 : x
  2. Step 2: Convert to fraction form
    10,014.15/15,018.11 = 3,438.78/x
  3. Step 3: Cross multiply
    10,014.15x = 15,018.11 × 3,438.78
  4. Step 4: Simplify right side
    10,014.15x = 51,643,976.31
  5. Step 5: Solve for x
    x = 51,643,976.31/10,014.15
  6. Step 6: Final answer
    x = 5,157.10

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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.