Home / 22,230.30-30,680.46-12,800.70

Finding the Fourth Proportional to 22,230.30, 30,680.46 and 12,800.70

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Solution

The fourth proportional to 22,230.30, 30,680.46 and 12,800.70 is: 17,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.30 : 30,680.46 = 12,800.70 : x
  2. Step 2: Convert to fraction form
    22,230.30/30,680.46 = 12,800.70/x
  3. Step 3: Cross multiply
    22,230.30x = 30,680.46 × 12,800.70
  4. Step 4: Simplify right side
    22,230.30x = 392,731,364.32
  5. Step 5: Solve for x
    x = 392,731,364.32/22,230.30
  6. Step 6: Final answer
    x = 17,666.49

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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.