Home / 39,428.21-54,412.22-21,524.18

Finding the Fourth Proportional to 39,428.21, 54,412.22 and 21,524.18

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Solution

The fourth proportional to 39,428.21, 54,412.22 and 21,524.18 is: 29,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.21 : 54,412.22 = 21,524.18 : x
  2. Step 2: Convert to fraction form
    39,428.21/54,412.22 = 21,524.18/x
  3. Step 3: Cross multiply
    39,428.21x = 54,412.22 × 21,524.18
  4. Step 4: Simplify right side
    39,428.21x = 1,171,178,199.23
  5. Step 5: Solve for x
    x = 1,171,178,199.23/39,428.21
  6. Step 6: Final answer
    x = 29,704.07

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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.