Home / 11,884.40-16,400.28-6,579.20

Finding the Fourth Proportional to 11,884.40, 16,400.28 and 6,579.20

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Solution

The fourth proportional to 11,884.40, 16,400.28 and 6,579.20 is: 9,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,884.40 : 16,400.28 = 6,579.20 : x
  2. Step 2: Convert to fraction form
    11,884.40/16,400.28 = 6,579.20/x
  3. Step 3: Cross multiply
    11,884.40x = 16,400.28 × 6,579.20
  4. Step 4: Simplify right side
    11,884.40x = 107,900,722.18
  5. Step 5: Solve for x
    x = 107,900,722.18/11,884.40
  6. Step 6: Final answer
    x = 9,079.19

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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.