Home / 11,389.70-17,084.55-8,084.90

Finding the Fourth Proportional to 11,389.70, 17,084.55 and 8,084.90

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Solution

The fourth proportional to 11,389.70, 17,084.55 and 8,084.90 is: 12,127.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.70 : 17,084.55 = 8,084.90 : x
  2. Step 2: Convert to fraction form
    11,389.70/17,084.55 = 8,084.90/x
  3. Step 3: Cross multiply
    11,389.70x = 17,084.55 × 8,084.90
  4. Step 4: Simplify right side
    11,389.70x = 138,126,878.30
  5. Step 5: Solve for x
    x = 138,126,878.30/11,389.70
  6. Step 6: Final answer
    x = 12,127.35

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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.