Home / 15,903.78-21,933.27-13,651.14

Finding the Fourth Proportional to 15,903.78, 21,933.27 and 13,651.14

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Solution

The fourth proportional to 15,903.78, 21,933.27 and 13,651.14 is: 18,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.78 : 21,933.27 = 13,651.14 : x
  2. Step 2: Convert to fraction form
    15,903.78/21,933.27 = 13,651.14/x
  3. Step 3: Cross multiply
    15,903.78x = 21,933.27 × 13,651.14
  4. Step 4: Simplify right side
    15,903.78x = 299,414,139.43
  5. Step 5: Solve for x
    x = 299,414,139.43/15,903.78
  6. Step 6: Final answer
    x = 18,826.60

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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.