Home / 15,095.45-20,831.33-8,380.88

Finding the Fourth Proportional to 15,095.45, 20,831.33 and 8,380.88

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Solution

The fourth proportional to 15,095.45, 20,831.33 and 8,380.88 is: 11,565.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.45 : 20,831.33 = 8,380.88 : x
  2. Step 2: Convert to fraction form
    15,095.45/20,831.33 = 8,380.88/x
  3. Step 3: Cross multiply
    15,095.45x = 20,831.33 × 8,380.88
  4. Step 4: Simplify right side
    15,095.45x = 174,584,730.91
  5. Step 5: Solve for x
    x = 174,584,730.91/15,095.45
  6. Step 6: Final answer
    x = 11,565.39

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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.