Home / 39,343.14-54,292.86-21,438.30

Finding the Fourth Proportional to 39,343.14, 54,292.86 and 21,438.30

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Solution

The fourth proportional to 39,343.14, 54,292.86 and 21,438.30 is: 29,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,343.14 : 54,292.86 = 21,438.30 : x
  2. Step 2: Convert to fraction form
    39,343.14/54,292.86 = 21,438.30/x
  3. Step 3: Cross multiply
    39,343.14x = 54,292.86 × 21,438.30
  4. Step 4: Simplify right side
    39,343.14x = 1,163,946,620.54
  5. Step 5: Solve for x
    x = 1,163,946,620.54/39,343.14
  6. Step 6: Final answer
    x = 29,584.49

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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.