Home / 12,981.75-19,472.70-4,661.84

Finding the Fourth Proportional to 12,981.75, 19,472.70 and 4,661.84

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Solution

The fourth proportional to 12,981.75, 19,472.70 and 4,661.84 is: 6,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.75 : 19,472.70 = 4,661.84 : x
  2. Step 2: Convert to fraction form
    12,981.75/19,472.70 = 4,661.84/x
  3. Step 3: Cross multiply
    12,981.75x = 19,472.70 × 4,661.84
  4. Step 4: Simplify right side
    12,981.75x = 90,778,514.40
  5. Step 5: Solve for x
    x = 90,778,514.40/12,981.75
  6. Step 6: Final answer
    x = 6,992.78

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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.