Home / 12,299.20-18,434.40-5,711.50

Finding the Fourth Proportional to 12,299.20, 18,434.40 and 5,711.50

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Solution

The fourth proportional to 12,299.20, 18,434.40 and 5,711.50 is: 8,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.20 : 18,434.40 = 5,711.50 : x
  2. Step 2: Convert to fraction form
    12,299.20/18,434.40 = 5,711.50/x
  3. Step 3: Cross multiply
    12,299.20x = 18,434.40 × 5,711.50
  4. Step 4: Simplify right side
    12,299.20x = 105,288,075.60
  5. Step 5: Solve for x
    x = 105,288,075.60/12,299.20
  6. Step 6: Final answer
    x = 8,560.56

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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.