Home / 13,545.54-18,691.14-8,168.25

Finding the Fourth Proportional to 13,545.54, 18,691.14 and 8,168.25

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Solution

The fourth proportional to 13,545.54, 18,691.14 and 8,168.25 is: 11,271.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.54 : 18,691.14 = 8,168.25 : x
  2. Step 2: Convert to fraction form
    13,545.54/18,691.14 = 8,168.25/x
  3. Step 3: Cross multiply
    13,545.54x = 18,691.14 × 8,168.25
  4. Step 4: Simplify right side
    13,545.54x = 152,673,904.31
  5. Step 5: Solve for x
    x = 152,673,904.31/13,545.54
  6. Step 6: Final answer
    x = 11,271.16

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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.