Home / 16,288.75-22,479.60-9,215.20

Finding the Fourth Proportional to 16,288.75, 22,479.60 and 9,215.20

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Solution

The fourth proportional to 16,288.75, 22,479.60 and 9,215.20 is: 12,717.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,288.75 : 22,479.60 = 9,215.20 : x
  2. Step 2: Convert to fraction form
    16,288.75/22,479.60 = 9,215.20/x
  3. Step 3: Cross multiply
    16,288.75x = 22,479.60 × 9,215.20
  4. Step 4: Simplify right side
    16,288.75x = 207,154,009.92
  5. Step 5: Solve for x
    x = 207,154,009.92/16,288.75
  6. Step 6: Final answer
    x = 12,717.61

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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.