Home / 28,344.36-39,116.68-16,408.20

Finding the Fourth Proportional to 28,344.36, 39,116.68 and 16,408.20

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Solution

The fourth proportional to 28,344.36, 39,116.68 and 16,408.20 is: 22,644.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.36 : 39,116.68 = 16,408.20 : x
  2. Step 2: Convert to fraction form
    28,344.36/39,116.68 = 16,408.20/x
  3. Step 3: Cross multiply
    28,344.36x = 39,116.68 × 16,408.20
  4. Step 4: Simplify right side
    28,344.36x = 641,834,308.78
  5. Step 5: Solve for x
    x = 641,834,308.78/28,344.36
  6. Step 6: Final answer
    x = 22,644.16

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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.