Home / 39,168.40-54,052.70-21,263.56

Finding the Fourth Proportional to 39,168.40, 54,052.70 and 21,263.56

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Solution

The fourth proportional to 39,168.40, 54,052.70 and 21,263.56 is: 29,343.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,168.40 : 54,052.70 = 21,263.56 : x
  2. Step 2: Convert to fraction form
    39,168.40/54,052.70 = 21,263.56/x
  3. Step 3: Cross multiply
    39,168.40x = 54,052.70 × 21,263.56
  4. Step 4: Simplify right side
    39,168.40x = 1,149,352,829.61
  5. Step 5: Solve for x
    x = 1,149,352,829.61/39,168.40
  6. Step 6: Final answer
    x = 29,343.88

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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.