Home / 15,545.75-21,454.05-8,831.66

Finding the Fourth Proportional to 15,545.75, 21,454.05 and 8,831.66

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Solution

The fourth proportional to 15,545.75, 21,454.05 and 8,831.66 is: 12,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.75 : 21,454.05 = 8,831.66 : x
  2. Step 2: Convert to fraction form
    15,545.75/21,454.05 = 8,831.66/x
  3. Step 3: Cross multiply
    15,545.75x = 21,454.05 × 8,831.66
  4. Step 4: Simplify right side
    15,545.75x = 189,474,831.06
  5. Step 5: Solve for x
    x = 189,474,831.06/15,545.75
  6. Step 6: Final answer
    x = 12,188.21

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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.