Home / 11,014.40-15,199.92-5,978.64

Finding the Fourth Proportional to 11,014.40, 15,199.92 and 5,978.64

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Solution

The fourth proportional to 11,014.40, 15,199.92 and 5,978.64 is: 8,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,014.40 : 15,199.92 = 5,978.64 : x
  2. Step 2: Convert to fraction form
    11,014.40/15,199.92 = 5,978.64/x
  3. Step 3: Cross multiply
    11,014.40x = 15,199.92 × 5,978.64
  4. Step 4: Simplify right side
    11,014.40x = 90,874,849.71
  5. Step 5: Solve for x
    x = 90,874,849.71/11,014.40
  6. Step 6: Final answer
    x = 8,250.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.