Home / 12,658.38-18,981.66-7,394.91

Finding the Fourth Proportional to 12,658.38, 18,981.66 and 7,394.91

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Solution

The fourth proportional to 12,658.38, 18,981.66 and 7,394.91 is: 11,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.38 : 18,981.66 = 7,394.91 : x
  2. Step 2: Convert to fraction form
    12,658.38/18,981.66 = 7,394.91/x
  3. Step 3: Cross multiply
    12,658.38x = 18,981.66 × 7,394.91
  4. Step 4: Simplify right side
    12,658.38x = 140,367,667.35
  5. Step 5: Solve for x
    x = 140,367,667.35/12,658.38
  6. Step 6: Final answer
    x = 11,088.91

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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.