Home / 13,909.12-19,194.50-7,861.33

Finding the Fourth Proportional to 13,909.12, 19,194.50 and 7,861.33

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Solution

The fourth proportional to 13,909.12, 19,194.50 and 7,861.33 is: 10,848.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.12 : 19,194.50 = 7,861.33 : x
  2. Step 2: Convert to fraction form
    13,909.12/19,194.50 = 7,861.33/x
  3. Step 3: Cross multiply
    13,909.12x = 19,194.50 × 7,861.33
  4. Step 4: Simplify right side
    13,909.12x = 150,894,259.38
  5. Step 5: Solve for x
    x = 150,894,259.38/13,909.12
  6. Step 6: Final answer
    x = 10,848.58

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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.