Home / 13,220.40-19,843.56-10,071.12

Finding the Fourth Proportional to 13,220.40, 19,843.56 and 10,071.12

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Solution

The fourth proportional to 13,220.40, 19,843.56 and 10,071.12 is: 15,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.40 : 19,843.56 = 10,071.12 : x
  2. Step 2: Convert to fraction form
    13,220.40/19,843.56 = 10,071.12/x
  3. Step 3: Cross multiply
    13,220.40x = 19,843.56 × 10,071.12
  4. Step 4: Simplify right side
    13,220.40x = 199,846,873.99
  5. Step 5: Solve for x
    x = 199,846,873.99/13,220.40
  6. Step 6: Final answer
    x = 15,116.55

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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.