Home / 15,928.85-21,959.84-12,709.61

Finding the Fourth Proportional to 15,928.85, 21,959.84 and 12,709.61

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Solution

The fourth proportional to 15,928.85, 21,959.84 and 12,709.61 is: 17,521.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.85 : 21,959.84 = 12,709.61 : x
  2. Step 2: Convert to fraction form
    15,928.85/21,959.84 = 12,709.61/x
  3. Step 3: Cross multiply
    15,928.85x = 21,959.84 × 12,709.61
  4. Step 4: Simplify right side
    15,928.85x = 279,101,006.39
  5. Step 5: Solve for x
    x = 279,101,006.39/15,928.85
  6. Step 6: Final answer
    x = 17,521.73

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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.