Home / 13,182.13-18,191.28-7,213.74

Finding the Fourth Proportional to 13,182.13, 18,191.28 and 7,213.74

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Solution

The fourth proportional to 13,182.13, 18,191.28 and 7,213.74 is: 9,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.13 : 18,191.28 = 7,213.74 : x
  2. Step 2: Convert to fraction form
    13,182.13/18,191.28 = 7,213.74/x
  3. Step 3: Cross multiply
    13,182.13x = 18,191.28 × 7,213.74
  4. Step 4: Simplify right side
    13,182.13x = 131,227,164.19
  5. Step 5: Solve for x
    x = 131,227,164.19/13,182.13
  6. Step 6: Final answer
    x = 9,954.93

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Double 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.