Home / 22,211.92-30,653.10-12,140.80

Finding the Fourth Proportional to 22,211.92, 30,653.10 and 12,140.80

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Solution

The fourth proportional to 22,211.92, 30,653.10 and 12,140.80 is: 16,754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.92 : 30,653.10 = 12,140.80 : x
  2. Step 2: Convert to fraction form
    22,211.92/30,653.10 = 12,140.80/x
  3. Step 3: Cross multiply
    22,211.92x = 30,653.10 × 12,140.80
  4. Step 4: Simplify right side
    22,211.92x = 372,153,156.48
  5. Step 5: Solve for x
    x = 372,153,156.48/22,211.92
  6. Step 6: Final answer
    x = 16,754.66

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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.