Home / 38,163.78-52,666.40-21,168.36

Finding the Fourth Proportional to 38,163.78, 52,666.40 and 21,168.36

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Solution

The fourth proportional to 38,163.78, 52,666.40 and 21,168.36 is: 29,212.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,163.78 : 52,666.40 = 21,168.36 : x
  2. Step 2: Convert to fraction form
    38,163.78/52,666.40 = 21,168.36/x
  3. Step 3: Cross multiply
    38,163.78x = 52,666.40 × 21,168.36
  4. Step 4: Simplify right side
    38,163.78x = 1,114,861,315.10
  5. Step 5: Solve for x
    x = 1,114,861,315.10/38,163.78
  6. Step 6: Final answer
    x = 29,212.55

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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.