Home / 39,424.68-54,406.08-21,519.36

Finding the Fourth Proportional to 39,424.68, 54,406.08 and 21,519.36

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Solution

The fourth proportional to 39,424.68, 54,406.08 and 21,519.36 is: 29,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,424.68 : 54,406.08 = 21,519.36 : x
  2. Step 2: Convert to fraction form
    39,424.68/54,406.08 = 21,519.36/x
  3. Step 3: Cross multiply
    39,424.68x = 54,406.08 × 21,519.36
  4. Step 4: Simplify right side
    39,424.68x = 1,170,784,021.71
  5. Step 5: Solve for x
    x = 1,170,784,021.71/39,424.68
  6. Step 6: Final answer
    x = 29,696.73

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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.