Home / 9,426.60-13,019.40-8,179.20

Finding the Fourth Proportional to 9,426.60, 13,019.40 and 8,179.20

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Solution

The fourth proportional to 9,426.60, 13,019.40 and 8,179.20 is: 11,296.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,426.60 : 13,019.40 = 8,179.20 : x
  2. Step 2: Convert to fraction form
    9,426.60/13,019.40 = 8,179.20/x
  3. Step 3: Cross multiply
    9,426.60x = 13,019.40 × 8,179.20
  4. Step 4: Simplify right side
    9,426.60x = 106,488,276.48
  5. Step 5: Solve for x
    x = 106,488,276.48/9,426.60
  6. Step 6: Final answer
    x = 11,296.57

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Half scale
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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.