Home / 11,421.96-17,109.06-9,188.70

Finding the Fourth Proportional to 11,421.96, 17,109.06 and 9,188.70

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Solution

The fourth proportional to 11,421.96, 17,109.06 and 9,188.70 is: 13,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.96 : 17,109.06 = 9,188.70 : x
  2. Step 2: Convert to fraction form
    11,421.96/17,109.06 = 9,188.70/x
  3. Step 3: Cross multiply
    11,421.96x = 17,109.06 × 9,188.70
  4. Step 4: Simplify right side
    11,421.96x = 157,210,019.62
  5. Step 5: Solve for x
    x = 157,210,019.62/11,421.96
  6. Step 6: Final answer
    x = 13,763.84

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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.