Home / 15,157.82-20,901.08-10,378.56

Finding the Fourth Proportional to 15,157.82, 20,901.08 and 10,378.56

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Solution

The fourth proportional to 15,157.82, 20,901.08 and 10,378.56 is: 14,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.82 : 20,901.08 = 10,378.56 : x
  2. Step 2: Convert to fraction form
    15,157.82/20,901.08 = 10,378.56/x
  3. Step 3: Cross multiply
    15,157.82x = 20,901.08 × 10,378.56
  4. Step 4: Simplify right side
    15,157.82x = 216,923,112.84
  5. Step 5: Solve for x
    x = 216,923,112.84/15,157.82
  6. Step 6: Final answer
    x = 14,310.97

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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.