Home / 13,638.84-20,443.56-6,603.96

Finding the Fourth Proportional to 13,638.84, 20,443.56 and 6,603.96

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Solution

The fourth proportional to 13,638.84, 20,443.56 and 6,603.96 is: 9,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.84 : 20,443.56 = 6,603.96 : x
  2. Step 2: Convert to fraction form
    13,638.84/20,443.56 = 6,603.96/x
  3. Step 3: Cross multiply
    13,638.84x = 20,443.56 × 6,603.96
  4. Step 4: Simplify right side
    13,638.84x = 135,008,452.50
  5. Step 5: Solve for x
    x = 135,008,452.50/13,638.84
  6. Step 6: Final answer
    x = 9,898.82

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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.