Home / 15,525.38-21,423.62-8,811.30

Finding the Fourth Proportional to 15,525.38, 21,423.62 and 8,811.30

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Solution

The fourth proportional to 15,525.38, 21,423.62 and 8,811.30 is: 12,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.38 : 21,423.62 = 8,811.30 : x
  2. Step 2: Convert to fraction form
    15,525.38/21,423.62 = 8,811.30/x
  3. Step 3: Cross multiply
    15,525.38x = 21,423.62 × 8,811.30
  4. Step 4: Simplify right side
    15,525.38x = 188,769,942.91
  5. Step 5: Solve for x
    x = 188,769,942.91/15,525.38
  6. Step 6: Final answer
    x = 12,158.80

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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.