Home / 15,226.65-21,012.30-8,853.75

Finding the Fourth Proportional to 15,226.65, 21,012.30 and 8,853.75

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Solution

The fourth proportional to 15,226.65, 21,012.30 and 8,853.75 is: 12,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.65 : 21,012.30 = 8,853.75 : x
  2. Step 2: Convert to fraction form
    15,226.65/21,012.30 = 8,853.75/x
  3. Step 3: Cross multiply
    15,226.65x = 21,012.30 × 8,853.75
  4. Step 4: Simplify right side
    15,226.65x = 186,037,651.13
  5. Step 5: Solve for x
    x = 186,037,651.13/15,226.65
  6. Step 6: Final answer
    x = 12,217.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.