Home / 15,931.20-23,899.44-5,540.16

Finding the Fourth Proportional to 15,931.20, 23,899.44 and 5,540.16

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Solution

The fourth proportional to 15,931.20, 23,899.44 and 5,540.16 is: 8,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.20 : 23,899.44 = 5,540.16 : x
  2. Step 2: Convert to fraction form
    15,931.20/23,899.44 = 5,540.16/x
  3. Step 3: Cross multiply
    15,931.20x = 23,899.44 × 5,540.16
  4. Step 4: Simplify right side
    15,931.20x = 132,406,721.51
  5. Step 5: Solve for x
    x = 132,406,721.51/15,931.20
  6. Step 6: Final answer
    x = 8,311.16

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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.