Home / 21,631.56-32,447.28-5,215.56

Finding the Fourth Proportional to 21,631.56, 32,447.28 and 5,215.56

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Solution

The fourth proportional to 21,631.56, 32,447.28 and 5,215.56 is: 7,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.56 : 32,447.28 = 5,215.56 : x
  2. Step 2: Convert to fraction form
    21,631.56/32,447.28 = 5,215.56/x
  3. Step 3: Cross multiply
    21,631.56x = 32,447.28 × 5,215.56
  4. Step 4: Simplify right side
    21,631.56x = 169,230,735.68
  5. Step 5: Solve for x
    x = 169,230,735.68/21,631.56
  6. Step 6: Final answer
    x = 7,823.33

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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.