Home / 21,232.68-31,855.71-8,758.59

Finding the Fourth Proportional to 21,232.68, 31,855.71 and 8,758.59

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Solution

The fourth proportional to 21,232.68, 31,855.71 and 8,758.59 is: 13,140.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.68 : 31,855.71 = 8,758.59 : x
  2. Step 2: Convert to fraction form
    21,232.68/31,855.71 = 8,758.59/x
  3. Step 3: Cross multiply
    21,232.68x = 31,855.71 × 8,758.59
  4. Step 4: Simplify right side
    21,232.68x = 279,011,103.05
  5. Step 5: Solve for x
    x = 279,011,103.05/21,232.68
  6. Step 6: Final answer
    x = 13,140.64

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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.