Home / 21,620.30-32,433.82-9,140.38

Finding the Fourth Proportional to 21,620.30, 32,433.82 and 9,140.38

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Solution

The fourth proportional to 21,620.30, 32,433.82 and 9,140.38 is: 13,711.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.30 : 32,433.82 = 9,140.38 : x
  2. Step 2: Convert to fraction form
    21,620.30/32,433.82 = 9,140.38/x
  3. Step 3: Cross multiply
    21,620.30x = 32,433.82 × 9,140.38
  4. Step 4: Simplify right side
    21,620.30x = 296,457,439.65
  5. Step 5: Solve for x
    x = 296,457,439.65/21,620.30
  6. Step 6: Final answer
    x = 13,711.99

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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.