Home / 39,425.71-54,408.77-21,521.68

Finding the Fourth Proportional to 39,425.71, 54,408.77 and 21,521.68

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Solution

The fourth proportional to 39,425.71, 54,408.77 and 21,521.68 is: 29,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.71 : 54,408.77 = 21,521.68 : x
  2. Step 2: Convert to fraction form
    39,425.71/54,408.77 = 21,521.68/x
  3. Step 3: Cross multiply
    39,425.71x = 54,408.77 × 21,521.68
  4. Step 4: Simplify right side
    39,425.71x = 1,170,968,137.13
  5. Step 5: Solve for x
    x = 1,170,968,137.13/39,425.71
  6. Step 6: Final answer
    x = 29,700.62

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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.