Home / 12,658.71-18,977.82-5,268.70

Finding the Fourth Proportional to 12,658.71, 18,977.82 and 5,268.70

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Solution

The fourth proportional to 12,658.71, 18,977.82 and 5,268.70 is: 7,898.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.71 : 18,977.82 = 5,268.70 : x
  2. Step 2: Convert to fraction form
    12,658.71/18,977.82 = 5,268.70/x
  3. Step 3: Cross multiply
    12,658.71x = 18,977.82 × 5,268.70
  4. Step 4: Simplify right side
    12,658.71x = 99,988,440.23
  5. Step 5: Solve for x
    x = 99,988,440.23/12,658.71
  6. Step 6: Final answer
    x = 7,898.79

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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.