Home / 39,519.78-54,538.47-21,614.46

Finding the Fourth Proportional to 39,519.78, 54,538.47 and 21,614.46

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Solution

The fourth proportional to 39,519.78, 54,538.47 and 21,614.46 is: 29,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,519.78 : 54,538.47 = 21,614.46 : x
  2. Step 2: Convert to fraction form
    39,519.78/54,538.47 = 21,614.46/x
  3. Step 3: Cross multiply
    39,519.78x = 54,538.47 × 21,614.46
  4. Step 4: Simplify right side
    39,519.78x = 1,178,819,578.28
  5. Step 5: Solve for x
    x = 1,178,819,578.28/39,519.78
  6. Step 6: Final answer
    x = 29,828.60

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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.