Home / 22,370.78-30,870.80-12,299.04

Finding the Fourth Proportional to 22,370.78, 30,870.80 and 12,299.04

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Solution

The fourth proportional to 22,370.78, 30,870.80 and 12,299.04 is: 16,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,370.78 : 30,870.80 = 12,299.04 : x
  2. Step 2: Convert to fraction form
    22,370.78/30,870.80 = 12,299.04/x
  3. Step 3: Cross multiply
    22,370.78x = 30,870.80 × 12,299.04
  4. Step 4: Simplify right side
    22,370.78x = 379,681,049.68
  5. Step 5: Solve for x
    x = 379,681,049.68/22,370.78
  6. Step 6: Final answer
    x = 16,972.19

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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.