Home / 10,381.38-15,574.44-2,985.90

Finding the Fourth Proportional to 10,381.38, 15,574.44 and 2,985.90

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Solution

The fourth proportional to 10,381.38, 15,574.44 and 2,985.90 is: 4,479.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.38 : 15,574.44 = 2,985.90 : x
  2. Step 2: Convert to fraction form
    10,381.38/15,574.44 = 2,985.90/x
  3. Step 3: Cross multiply
    10,381.38x = 15,574.44 × 2,985.90
  4. Step 4: Simplify right side
    10,381.38x = 46,503,720.40
  5. Step 5: Solve for x
    x = 46,503,720.40/10,381.38
  6. Step 6: Final answer
    x = 4,479.53

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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.