Home / 10,921.60-16,382.40-7,465.60

Finding the Fourth Proportional to 10,921.60, 16,382.40 and 7,465.60

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Solution

The fourth proportional to 10,921.60, 16,382.40 and 7,465.60 is: 11,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.60 : 16,382.40 = 7,465.60 : x
  2. Step 2: Convert to fraction form
    10,921.60/16,382.40 = 7,465.60/x
  3. Step 3: Cross multiply
    10,921.60x = 16,382.40 × 7,465.60
  4. Step 4: Simplify right side
    10,921.60x = 122,304,445.44
  5. Step 5: Solve for x
    x = 122,304,445.44/10,921.60
  6. Step 6: Final answer
    x = 11,198.40

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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.