Home / 21,247.16-31,870.62-5,452.16

Finding the Fourth Proportional to 21,247.16, 31,870.62 and 5,452.16

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Solution

The fourth proportional to 21,247.16, 31,870.62 and 5,452.16 is: 8,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.16 : 31,870.62 = 5,452.16 : x
  2. Step 2: Convert to fraction form
    21,247.16/31,870.62 = 5,452.16/x
  3. Step 3: Cross multiply
    21,247.16x = 31,870.62 × 5,452.16
  4. Step 4: Simplify right side
    21,247.16x = 173,763,560.19
  5. Step 5: Solve for x
    x = 173,763,560.19/21,247.16
  6. Step 6: Final answer
    x = 8,178.20

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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.