Home / 10,318.09-15,472.48-2,920.80

Finding the Fourth Proportional to 10,318.09, 15,472.48 and 2,920.80

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Solution

The fourth proportional to 10,318.09, 15,472.48 and 2,920.80 is: 4,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.09 : 15,472.48 = 2,920.80 : x
  2. Step 2: Convert to fraction form
    10,318.09/15,472.48 = 2,920.80/x
  3. Step 3: Cross multiply
    10,318.09x = 15,472.48 × 2,920.80
  4. Step 4: Simplify right side
    10,318.09x = 45,192,019.58
  5. Step 5: Solve for x
    x = 45,192,019.58/10,318.09
  6. Step 6: Final answer
    x = 4,379.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.