Home / 10,638.03-15,966.90-5,376.75

Finding the Fourth Proportional to 10,638.03, 15,966.90 and 5,376.75

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Solution

The fourth proportional to 10,638.03, 15,966.90 and 5,376.75 is: 8,070.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.03 : 15,966.90 = 5,376.75 : x
  2. Step 2: Convert to fraction form
    10,638.03/15,966.90 = 5,376.75/x
  3. Step 3: Cross multiply
    10,638.03x = 15,966.90 × 5,376.75
  4. Step 4: Simplify right side
    10,638.03x = 85,850,089.30
  5. Step 5: Solve for x
    x = 85,850,089.30/10,638.03
  6. Step 6: Final answer
    x = 8,070.11

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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.