Home / 39,839.66-54,977.66-21,934.81

Finding the Fourth Proportional to 39,839.66, 54,977.66 and 21,934.81

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Solution

The fourth proportional to 39,839.66, 54,977.66 and 21,934.81 is: 30,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,839.66 : 54,977.66 = 21,934.81 : x
  2. Step 2: Convert to fraction form
    39,839.66/54,977.66 = 21,934.81/x
  3. Step 3: Cross multiply
    39,839.66x = 54,977.66 × 21,934.81
  4. Step 4: Simplify right side
    39,839.66x = 1,205,924,526.34
  5. Step 5: Solve for x
    x = 1,205,924,526.34/39,839.66
  6. Step 6: Final answer
    x = 30,269.45

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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.