Home / 15,345.54-21,188.77-11,982.53

Finding the Fourth Proportional to 15,345.54, 21,188.77 and 11,982.53

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Solution

The fourth proportional to 15,345.54, 21,188.77 and 11,982.53 is: 16,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.54 : 21,188.77 = 11,982.53 : x
  2. Step 2: Convert to fraction form
    15,345.54/21,188.77 = 11,982.53/x
  3. Step 3: Cross multiply
    15,345.54x = 21,188.77 × 11,982.53
  4. Step 4: Simplify right side
    15,345.54x = 253,894,906.33
  5. Step 5: Solve for x
    x = 253,894,906.33/15,345.54
  6. Step 6: Final answer
    x = 16,545.19

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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.