Home / 13,221.40-19,845.06-10,072.12

Finding the Fourth Proportional to 13,221.40, 19,845.06 and 10,072.12

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Solution

The fourth proportional to 13,221.40, 19,845.06 and 10,072.12 is: 15,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.40 : 19,845.06 = 10,072.12 : x
  2. Step 2: Convert to fraction form
    13,221.40/19,845.06 = 10,072.12/x
  3. Step 3: Cross multiply
    13,221.40x = 19,845.06 × 10,072.12
  4. Step 4: Simplify right side
    13,221.40x = 199,881,825.73
  5. Step 5: Solve for x
    x = 199,881,825.73/13,221.40
  6. Step 6: Final answer
    x = 15,118.05

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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.