Home / 22,320.45-30,805.05-12,887.19

Finding the Fourth Proportional to 22,320.45, 30,805.05 and 12,887.19

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Solution

The fourth proportional to 22,320.45, 30,805.05 and 12,887.19 is: 17,785.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,320.45 : 30,805.05 = 12,887.19 : x
  2. Step 2: Convert to fraction form
    22,320.45/30,805.05 = 12,887.19/x
  3. Step 3: Cross multiply
    22,320.45x = 30,805.05 × 12,887.19
  4. Step 4: Simplify right side
    22,320.45x = 396,990,532.31
  5. Step 5: Solve for x
    x = 396,990,532.31/22,320.45
  6. Step 6: Final answer
    x = 17,785.96

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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.