Home / 15,163.54-20,901.45-10,117.78

Finding the Fourth Proportional to 15,163.54, 20,901.45 and 10,117.78

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Solution

The fourth proportional to 15,163.54, 20,901.45 and 10,117.78 is: 13,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.54 : 20,901.45 = 10,117.78 : x
  2. Step 2: Convert to fraction form
    15,163.54/20,901.45 = 10,117.78/x
  3. Step 3: Cross multiply
    15,163.54x = 20,901.45 × 10,117.78
  4. Step 4: Simplify right side
    15,163.54x = 211,476,272.78
  5. Step 5: Solve for x
    x = 211,476,272.78/15,163.54
  6. Step 6: Final answer
    x = 13,946.37

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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.