Home / 13,890.78-19,169.22-9,176.04

Finding the Fourth Proportional to 13,890.78, 19,169.22 and 9,176.04

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Solution

The fourth proportional to 13,890.78, 19,169.22 and 9,176.04 is: 12,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.78 : 19,169.22 = 9,176.04 : x
  2. Step 2: Convert to fraction form
    13,890.78/19,169.22 = 9,176.04/x
  3. Step 3: Cross multiply
    13,890.78x = 19,169.22 × 9,176.04
  4. Step 4: Simplify right side
    13,890.78x = 175,897,529.49
  5. Step 5: Solve for x
    x = 175,897,529.49/13,890.78
  6. Step 6: Final answer
    x = 12,662.90

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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.