Home / 22,246.85-30,707.49-12,821.69

Finding the Fourth Proportional to 22,246.85, 30,707.49 and 12,821.69

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Solution

The fourth proportional to 22,246.85, 30,707.49 and 12,821.69 is: 17,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,246.85 : 30,707.49 = 12,821.69 : x
  2. Step 2: Convert to fraction form
    22,246.85/30,707.49 = 12,821.69/x
  3. Step 3: Cross multiply
    22,246.85x = 30,707.49 × 12,821.69
  4. Step 4: Simplify right side
    22,246.85x = 393,721,763.92
  5. Step 5: Solve for x
    x = 393,721,763.92/22,246.85
  6. Step 6: Final answer
    x = 17,697.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.