Home / 22,479.95-31,009.88-15,775.58

Finding the Fourth Proportional to 22,479.95, 31,009.88 and 15,775.58

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Solution

The fourth proportional to 22,479.95, 31,009.88 and 15,775.58 is: 21,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,479.95 : 31,009.88 = 15,775.58 : x
  2. Step 2: Convert to fraction form
    22,479.95/31,009.88 = 15,775.58/x
  3. Step 3: Cross multiply
    22,479.95x = 31,009.88 × 15,775.58
  4. Step 4: Simplify right side
    22,479.95x = 489,198,608.80
  5. Step 5: Solve for x
    x = 489,198,608.80/22,479.95
  6. Step 6: Final answer
    x = 21,761.56

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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.