Home / 22,451.55-30,983.36-12,380.40

Finding the Fourth Proportional to 22,451.55, 30,983.36 and 12,380.40

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Solution

The fourth proportional to 22,451.55, 30,983.36 and 12,380.40 is: 17,085.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,451.55 : 30,983.36 = 12,380.40 : x
  2. Step 2: Convert to fraction form
    22,451.55/30,983.36 = 12,380.40/x
  3. Step 3: Cross multiply
    22,451.55x = 30,983.36 × 12,380.40
  4. Step 4: Simplify right side
    22,451.55x = 383,586,328.24
  5. Step 5: Solve for x
    x = 383,586,328.24/22,451.55
  6. Step 6: Final answer
    x = 17,085.07

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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.