Home / 39,426.84-54,408.24-21,521.79

Finding the Fourth Proportional to 39,426.84, 54,408.24 and 21,521.79

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Solution

The fourth proportional to 39,426.84, 54,408.24 and 21,521.79 is: 29,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,426.84 : 54,408.24 = 21,521.79 : x
  2. Step 2: Convert to fraction form
    39,426.84/54,408.24 = 21,521.79/x
  3. Step 3: Cross multiply
    39,426.84x = 54,408.24 × 21,521.79
  4. Step 4: Simplify right side
    39,426.84x = 1,170,962,715.55
  5. Step 5: Solve for x
    x = 1,170,962,715.55/39,426.84
  6. Step 6: Final answer
    x = 29,699.63

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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.