Home / 13,185.18-18,195.23-7,217.10

Finding the Fourth Proportional to 13,185.18, 18,195.23 and 7,217.10

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Solution

The fourth proportional to 13,185.18, 18,195.23 and 7,217.10 is: 9,959.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.18 : 18,195.23 = 7,217.10 : x
  2. Step 2: Convert to fraction form
    13,185.18/18,195.23 = 7,217.10/x
  3. Step 3: Cross multiply
    13,185.18x = 18,195.23 × 7,217.10
  4. Step 4: Simplify right side
    13,185.18x = 131,316,812.48
  5. Step 5: Solve for x
    x = 131,316,812.48/13,185.18
  6. Step 6: Final answer
    x = 9,959.43

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Half scale
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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.