Home / 12,399.76-18,595.68-4,077.87

Finding the Fourth Proportional to 12,399.76, 18,595.68 and 4,077.87

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Solution

The fourth proportional to 12,399.76, 18,595.68 and 4,077.87 is: 6,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.76 : 18,595.68 = 4,077.87 : x
  2. Step 2: Convert to fraction form
    12,399.76/18,595.68 = 4,077.87/x
  3. Step 3: Cross multiply
    12,399.76x = 18,595.68 × 4,077.87
  4. Step 4: Simplify right side
    12,399.76x = 75,830,672.62
  5. Step 5: Solve for x
    x = 75,830,672.62/12,399.76
  6. Step 6: Final answer
    x = 6,115.50

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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.