Home / 22,479.45-31,009.19-15,775.08

Finding the Fourth Proportional to 22,479.45, 31,009.19 and 15,775.08

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Solution

The fourth proportional to 22,479.45, 31,009.19 and 15,775.08 is: 21,760.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,479.45 : 31,009.19 = 15,775.08 : x
  2. Step 2: Convert to fraction form
    22,479.45/31,009.19 = 15,775.08/x
  3. Step 3: Cross multiply
    22,479.45x = 31,009.19 × 15,775.08
  4. Step 4: Simplify right side
    22,479.45x = 489,172,452.99
  5. Step 5: Solve for x
    x = 489,172,452.99/22,479.45
  6. Step 6: Final answer
    x = 21,760.87

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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.