Home / 13,198.04-18,208.76-7,528.71

Finding the Fourth Proportional to 13,198.04, 18,208.76 and 7,528.71

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Solution

The fourth proportional to 13,198.04, 18,208.76 and 7,528.71 is: 10,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.04 : 18,208.76 = 7,528.71 : x
  2. Step 2: Convert to fraction form
    13,198.04/18,208.76 = 7,528.71/x
  3. Step 3: Cross multiply
    13,198.04x = 18,208.76 × 7,528.71
  4. Step 4: Simplify right side
    13,198.04x = 137,088,435.86
  5. Step 5: Solve for x
    x = 137,088,435.86/13,198.04
  6. Step 6: Final answer
    x = 10,387.03

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Half scale
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Double scale
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Similar ratio
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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.