Home / 10,101.40-15,145.26-5,161.48

Finding the Fourth Proportional to 10,101.40, 15,145.26 and 5,161.48

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Solution

The fourth proportional to 10,101.40, 15,145.26 and 5,161.48 is: 7,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.40 : 15,145.26 = 5,161.48 : x
  2. Step 2: Convert to fraction form
    10,101.40/15,145.26 = 5,161.48/x
  3. Step 3: Cross multiply
    10,101.40x = 15,145.26 × 5,161.48
  4. Step 4: Simplify right side
    10,101.40x = 78,171,956.58
  5. Step 5: Solve for x
    x = 78,171,956.58/10,101.40
  6. Step 6: Final answer
    x = 7,738.72

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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.