Home / 22,450.12-30,980.90-12,378.28

Finding the Fourth Proportional to 22,450.12, 30,980.90 and 12,378.28

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Solution

The fourth proportional to 22,450.12, 30,980.90 and 12,378.28 is: 17,081.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,450.12 : 30,980.90 = 12,378.28 : x
  2. Step 2: Convert to fraction form
    22,450.12/30,980.90 = 12,378.28/x
  3. Step 3: Cross multiply
    22,450.12x = 30,980.90 × 12,378.28
  4. Step 4: Simplify right side
    22,450.12x = 383,490,254.85
  5. Step 5: Solve for x
    x = 383,490,254.85/22,450.12
  6. Step 6: Final answer
    x = 17,081.88

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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.