Home / 22,318.78-30,798.48-12,887.14

Finding the Fourth Proportional to 22,318.78, 30,798.48 and 12,887.14

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Solution

The fourth proportional to 22,318.78, 30,798.48 and 12,887.14 is: 17,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,318.78 : 30,798.48 = 12,887.14 : x
  2. Step 2: Convert to fraction form
    22,318.78/30,798.48 = 12,887.14/x
  3. Step 3: Cross multiply
    22,318.78x = 30,798.48 × 12,887.14
  4. Step 4: Simplify right side
    22,318.78x = 396,904,323.55
  5. Step 5: Solve for x
    x = 396,904,323.55/22,318.78
  6. Step 6: Final answer
    x = 17,783.42

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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.