Home / 13,272.23-19,905.13-3,909.70

Finding the Fourth Proportional to 13,272.23, 19,905.13 and 3,909.70

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Solution

The fourth proportional to 13,272.23, 19,905.13 and 3,909.70 is: 5,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.23 : 19,905.13 = 3,909.70 : x
  2. Step 2: Convert to fraction form
    13,272.23/19,905.13 = 3,909.70/x
  3. Step 3: Cross multiply
    13,272.23x = 19,905.13 × 3,909.70
  4. Step 4: Simplify right side
    13,272.23x = 77,823,086.76
  5. Step 5: Solve for x
    x = 77,823,086.76/13,272.23
  6. Step 6: Final answer
    x = 5,863.60

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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.