Home / 38,398.78-52,983.89-21,399.29

Finding the Fourth Proportional to 38,398.78, 52,983.89 and 21,399.29

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Solution

The fourth proportional to 38,398.78, 52,983.89 and 21,399.29 is: 29,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,398.78 : 52,983.89 = 21,399.29 : x
  2. Step 2: Convert to fraction form
    38,398.78/52,983.89 = 21,399.29/x
  3. Step 3: Cross multiply
    38,398.78x = 52,983.89 × 21,399.29
  4. Step 4: Simplify right side
    38,398.78x = 1,133,817,627.44
  5. Step 5: Solve for x
    x = 1,133,817,627.44/38,398.78
  6. Step 6: Final answer
    x = 29,527.44

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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.