Home / 13,191.40-18,189.54-9,001.96

Finding the Fourth Proportional to 13,191.40, 18,189.54 and 9,001.96

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Solution

The fourth proportional to 13,191.40, 18,189.54 and 9,001.96 is: 12,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.40 : 18,189.54 = 9,001.96 : x
  2. Step 2: Convert to fraction form
    13,191.40/18,189.54 = 9,001.96/x
  3. Step 3: Cross multiply
    13,191.40x = 18,189.54 × 9,001.96
  4. Step 4: Simplify right side
    13,191.40x = 163,741,511.50
  5. Step 5: Solve for x
    x = 163,741,511.50/13,191.40
  6. Step 6: Final answer
    x = 12,412.75

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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.