Home / 21,815.08-32,716.72-9,328.92

Finding the Fourth Proportional to 21,815.08, 32,716.72 and 9,328.92

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Solution

The fourth proportional to 21,815.08, 32,716.72 and 9,328.92 is: 13,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.08 : 32,716.72 = 9,328.92 : x
  2. Step 2: Convert to fraction form
    21,815.08/32,716.72 = 9,328.92/x
  3. Step 3: Cross multiply
    21,815.08x = 32,716.72 × 9,328.92
  4. Step 4: Simplify right side
    21,815.08x = 305,211,663.54
  5. Step 5: Solve for x
    x = 305,211,663.54/21,815.08
  6. Step 6: Final answer
    x = 13,990.86

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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.