Home / 39,426.66-54,408.06-21,521.19

Finding the Fourth Proportional to 39,426.66, 54,408.06 and 21,521.19

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Solution

The fourth proportional to 39,426.66, 54,408.06 and 21,521.19 is: 29,698.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,426.66 : 54,408.06 = 21,521.19 : x
  2. Step 2: Convert to fraction form
    39,426.66/54,408.06 = 21,521.19/x
  3. Step 3: Cross multiply
    39,426.66x = 54,408.06 × 21,521.19
  4. Step 4: Simplify right side
    39,426.66x = 1,170,926,196.79
  5. Step 5: Solve for x
    x = 1,170,926,196.79/39,426.66
  6. Step 6: Final answer
    x = 29,698.84

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Double scale
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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.