Home / 15,110.47-20,845.74-10,069.78

Finding the Fourth Proportional to 15,110.47, 20,845.74 and 10,069.78

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Solution

The fourth proportional to 15,110.47, 20,845.74 and 10,069.78 is: 13,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.47 : 20,845.74 = 10,069.78 : x
  2. Step 2: Convert to fraction form
    15,110.47/20,845.74 = 10,069.78/x
  3. Step 3: Cross multiply
    15,110.47x = 20,845.74 × 10,069.78
  4. Step 4: Simplify right side
    15,110.47x = 209,912,015.74
  5. Step 5: Solve for x
    x = 209,912,015.74/15,110.47
  6. Step 6: Final answer
    x = 13,891.83

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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.