Home / 19,861.40-27,408.82-10,909.72

Finding the Fourth Proportional to 19,861.40, 27,408.82 and 10,909.72

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Solution

The fourth proportional to 19,861.40, 27,408.82 and 10,909.72 is: 15,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.40 : 27,408.82 = 10,909.72 : x
  2. Step 2: Convert to fraction form
    19,861.40/27,408.82 = 10,909.72/x
  3. Step 3: Cross multiply
    19,861.40x = 27,408.82 × 10,909.72
  4. Step 4: Simplify right side
    19,861.40x = 299,022,551.73
  5. Step 5: Solve for x
    x = 299,022,551.73/19,861.40
  6. Step 6: Final answer
    x = 15,055.46

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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.