Home / 15,157.82-20,901.07-10,378.55

Finding the Fourth Proportional to 15,157.82, 20,901.07 and 10,378.55

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Solution

The fourth proportional to 15,157.82, 20,901.07 and 10,378.55 is: 14,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.82 : 20,901.07 = 10,378.55 : x
  2. Step 2: Convert to fraction form
    15,157.82/20,901.07 = 10,378.55/x
  3. Step 3: Cross multiply
    15,157.82x = 20,901.07 × 10,378.55
  4. Step 4: Simplify right side
    15,157.82x = 216,922,800.05
  5. Step 5: Solve for x
    x = 216,922,800.05/15,157.82
  6. Step 6: Final answer
    x = 14,310.95

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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.