Home / 14,269.72-21,408.15-5,385.03

Finding the Fourth Proportional to 14,269.72, 21,408.15 and 5,385.03

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Solution

The fourth proportional to 14,269.72, 21,408.15 and 5,385.03 is: 8,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,269.72 : 21,408.15 = 5,385.03 : x
  2. Step 2: Convert to fraction form
    14,269.72/21,408.15 = 5,385.03/x
  3. Step 3: Cross multiply
    14,269.72x = 21,408.15 × 5,385.03
  4. Step 4: Simplify right side
    14,269.72x = 115,283,560.04
  5. Step 5: Solve for x
    x = 115,283,560.04/14,269.72
  6. Step 6: Final answer
    x = 8,078.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.