Home / 13,998.47-19,311.09-8,958.65

Finding the Fourth Proportional to 13,998.47, 19,311.09 and 8,958.65

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Solution

The fourth proportional to 13,998.47, 19,311.09 and 8,958.65 is: 12,358.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.47 : 19,311.09 = 8,958.65 : x
  2. Step 2: Convert to fraction form
    13,998.47/19,311.09 = 8,958.65/x
  3. Step 3: Cross multiply
    13,998.47x = 19,311.09 × 8,958.65
  4. Step 4: Simplify right side
    13,998.47x = 173,001,311.11
  5. Step 5: Solve for x
    x = 173,001,311.11/13,998.47
  6. Step 6: Final answer
    x = 12,358.58

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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.