Home / 15,863.95-21,891.64-9,150.77

Finding the Fourth Proportional to 15,863.95, 21,891.64 and 9,150.77

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Solution

The fourth proportional to 15,863.95, 21,891.64 and 9,150.77 is: 12,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.95 : 21,891.64 = 9,150.77 : x
  2. Step 2: Convert to fraction form
    15,863.95/21,891.64 = 9,150.77/x
  3. Step 3: Cross multiply
    15,863.95x = 21,891.64 × 9,150.77
  4. Step 4: Simplify right side
    15,863.95x = 200,325,437.31
  5. Step 5: Solve for x
    x = 200,325,437.31/15,863.95
  6. Step 6: Final answer
    x = 12,627.71

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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.