Home / 22,451.79-30,984.86-12,380.20

Finding the Fourth Proportional to 22,451.79, 30,984.86 and 12,380.20

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Solution

The fourth proportional to 22,451.79, 30,984.86 and 12,380.20 is: 17,085.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,451.79 : 30,984.86 = 12,380.20 : x
  2. Step 2: Convert to fraction form
    22,451.79/30,984.86 = 12,380.20/x
  3. Step 3: Cross multiply
    22,451.79x = 30,984.86 × 12,380.20
  4. Step 4: Simplify right side
    22,451.79x = 383,598,763.77
  5. Step 5: Solve for x
    x = 383,598,763.77/22,451.79
  6. Step 6: Final answer
    x = 17,085.44

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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.