Home / 9,120.35-13,680.53-7,043.39

Finding the Fourth Proportional to 9,120.35, 13,680.53 and 7,043.39

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Solution

The fourth proportional to 9,120.35, 13,680.53 and 7,043.39 is: 10,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.35 : 13,680.53 = 7,043.39 : x
  2. Step 2: Convert to fraction form
    9,120.35/13,680.53 = 7,043.39/x
  3. Step 3: Cross multiply
    9,120.35x = 13,680.53 × 7,043.39
  4. Step 4: Simplify right side
    9,120.35x = 96,357,308.20
  5. Step 5: Solve for x
    x = 96,357,308.20/9,120.35
  6. Step 6: Final answer
    x = 10,565.09

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Similar ratio
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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.