Home / 21,247.56-31,861.62-6,458.04

Finding the Fourth Proportional to 21,247.56, 31,861.62 and 6,458.04

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Solution

The fourth proportional to 21,247.56, 31,861.62 and 6,458.04 is: 9,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.56 : 31,861.62 = 6,458.04 : x
  2. Step 2: Convert to fraction form
    21,247.56/31,861.62 = 6,458.04/x
  3. Step 3: Cross multiply
    21,247.56x = 31,861.62 × 6,458.04
  4. Step 4: Simplify right side
    21,247.56x = 205,763,616.42
  5. Step 5: Solve for x
    x = 205,763,616.42/21,247.56
  6. Step 6: Final answer
    x = 9,684.11

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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.