Home / 12,008.40-18,002.16-5,765.28

Finding the Fourth Proportional to 12,008.40, 18,002.16 and 5,765.28

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Solution

The fourth proportional to 12,008.40, 18,002.16 and 5,765.28 is: 8,642.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.40 : 18,002.16 = 5,765.28 : x
  2. Step 2: Convert to fraction form
    12,008.40/18,002.16 = 5,765.28/x
  3. Step 3: Cross multiply
    12,008.40x = 18,002.16 × 5,765.28
  4. Step 4: Simplify right side
    12,008.40x = 103,787,493.00
  5. Step 5: Solve for x
    x = 103,787,493.00/12,008.40
  6. Step 6: Final answer
    x = 8,642.91

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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.