Home / 13,428.27-18,528.03-8,122.97

Finding the Fourth Proportional to 13,428.27, 18,528.03 and 8,122.97

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Solution

The fourth proportional to 13,428.27, 18,528.03 and 8,122.97 is: 11,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.27 : 18,528.03 = 8,122.97 : x
  2. Step 2: Convert to fraction form
    13,428.27/18,528.03 = 8,122.97/x
  3. Step 3: Cross multiply
    13,428.27x = 18,528.03 × 8,122.97
  4. Step 4: Simplify right side
    13,428.27x = 150,502,678.17
  5. Step 5: Solve for x
    x = 150,502,678.17/13,428.27
  6. Step 6: Final answer
    x = 11,207.90

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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.