Home / 12,889.20-19,337.20-5,494.08

Finding the Fourth Proportional to 12,889.20, 19,337.20 and 5,494.08

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Solution

The fourth proportional to 12,889.20, 19,337.20 and 5,494.08 is: 8,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.20 : 19,337.20 = 5,494.08 : x
  2. Step 2: Convert to fraction form
    12,889.20/19,337.20 = 5,494.08/x
  3. Step 3: Cross multiply
    12,889.20x = 19,337.20 × 5,494.08
  4. Step 4: Simplify right side
    12,889.20x = 106,240,123.78
  5. Step 5: Solve for x
    x = 106,240,123.78/12,889.20
  6. Step 6: Final answer
    x = 8,242.57

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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.