Home / 11,395.38-15,717.95-9,900.73

Finding the Fourth Proportional to 11,395.38, 15,717.95 and 9,900.73

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Solution

The fourth proportional to 11,395.38, 15,717.95 and 9,900.73 is: 13,656.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,395.38 : 15,717.95 = 9,900.73 : x
  2. Step 2: Convert to fraction form
    11,395.38/15,717.95 = 9,900.73/x
  3. Step 3: Cross multiply
    11,395.38x = 15,717.95 × 9,900.73
  4. Step 4: Simplify right side
    11,395.38x = 155,619,186.38
  5. Step 5: Solve for x
    x = 155,619,186.38/11,395.38
  6. Step 6: Final answer
    x = 13,656.34

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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.