Home / 22,448.72-30,979.36-13,022.88

Finding the Fourth Proportional to 22,448.72, 30,979.36 and 13,022.88

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Solution

The fourth proportional to 22,448.72, 30,979.36 and 13,022.88 is: 17,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,448.72 : 30,979.36 = 13,022.88 : x
  2. Step 2: Convert to fraction form
    22,448.72/30,979.36 = 13,022.88/x
  3. Step 3: Cross multiply
    22,448.72x = 30,979.36 × 13,022.88
  4. Step 4: Simplify right side
    22,448.72x = 403,440,487.76
  5. Step 5: Solve for x
    x = 403,440,487.76/22,448.72
  6. Step 6: Final answer
    x = 17,971.65

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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.