Home / 15,482.38-21,365.70-8,408.80

Finding the Fourth Proportional to 15,482.38, 21,365.70 and 8,408.80

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Solution

The fourth proportional to 15,482.38, 21,365.70 and 8,408.80 is: 11,604.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,482.38 : 21,365.70 = 8,408.80 : x
  2. Step 2: Convert to fraction form
    15,482.38/21,365.70 = 8,408.80/x
  3. Step 3: Cross multiply
    15,482.38x = 21,365.70 × 8,408.80
  4. Step 4: Simplify right side
    15,482.38x = 179,659,898.16
  5. Step 5: Solve for x
    x = 179,659,898.16/15,482.38
  6. Step 6: Final answer
    x = 11,604.15

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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.