Home / 15,595.20-21,520.08-8,521.61

Finding the Fourth Proportional to 15,595.20, 21,520.08 and 8,521.61

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Solution

The fourth proportional to 15,595.20, 21,520.08 and 8,521.61 is: 11,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.20 : 21,520.08 = 8,521.61 : x
  2. Step 2: Convert to fraction form
    15,595.20/21,520.08 = 8,521.61/x
  3. Step 3: Cross multiply
    15,595.20x = 21,520.08 × 8,521.61
  4. Step 4: Simplify right side
    15,595.20x = 183,385,621.33
  5. Step 5: Solve for x
    x = 183,385,621.33/15,595.20
  6. Step 6: Final answer
    x = 11,759.11

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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.