Home / 12,639.52-18,951.16-5,249.08

Finding the Fourth Proportional to 12,639.52, 18,951.16 and 5,249.08

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Solution

The fourth proportional to 12,639.52, 18,951.16 and 5,249.08 is: 7,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.52 : 18,951.16 = 5,249.08 : x
  2. Step 2: Convert to fraction form
    12,639.52/18,951.16 = 5,249.08/x
  3. Step 3: Cross multiply
    12,639.52x = 18,951.16 × 5,249.08
  4. Step 4: Simplify right side
    12,639.52x = 99,476,154.93
  5. Step 5: Solve for x
    x = 99,476,154.93/12,639.52
  6. Step 6: Final answer
    x = 7,870.25

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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.