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Finding the Fourth Proportional to 15,525.80, 23,250.30 and 12,453.80

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Solution

The fourth proportional to 15,525.80, 23,250.30 and 12,453.80 is: 18,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.80 : 23,250.30 = 12,453.80 : x
  2. Step 2: Convert to fraction form
    15,525.80/23,250.30 = 12,453.80/x
  3. Step 3: Cross multiply
    15,525.80x = 23,250.30 × 12,453.80
  4. Step 4: Simplify right side
    15,525.80x = 289,554,586.14
  5. Step 5: Solve for x
    x = 289,554,586.14/15,525.80
  6. Step 6: Final answer
    x = 18,649.90

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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.