Home / 15,620.13-21,555.45-8,546.40

Finding the Fourth Proportional to 15,620.13, 21,555.45 and 8,546.40

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Solution

The fourth proportional to 15,620.13, 21,555.45 and 8,546.40 is: 11,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.13 : 21,555.45 = 8,546.40 : x
  2. Step 2: Convert to fraction form
    15,620.13/21,555.45 = 8,546.40/x
  3. Step 3: Cross multiply
    15,620.13x = 21,555.45 × 8,546.40
  4. Step 4: Simplify right side
    15,620.13x = 184,221,497.88
  5. Step 5: Solve for x
    x = 184,221,497.88/15,620.13
  6. Step 6: Final answer
    x = 11,793.85

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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.