Home / 19,861.25-27,408.51-10,909.34

Finding the Fourth Proportional to 19,861.25, 27,408.51 and 10,909.34

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Solution

The fourth proportional to 19,861.25, 27,408.51 and 10,909.34 is: 15,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.25 : 27,408.51 = 10,909.34 : x
  2. Step 2: Convert to fraction form
    19,861.25/27,408.51 = 10,909.34/x
  3. Step 3: Cross multiply
    19,861.25x = 27,408.51 × 10,909.34
  4. Step 4: Simplify right side
    19,861.25x = 299,008,754.48
  5. Step 5: Solve for x
    x = 299,008,754.48/19,861.25
  6. Step 6: Final answer
    x = 15,054.88

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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.