Home / 15,903.28-21,932.58-13,650.64

Finding the Fourth Proportional to 15,903.28, 21,932.58 and 13,650.64

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Solution

The fourth proportional to 15,903.28, 21,932.58 and 13,650.64 is: 18,825.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.28 : 21,932.58 = 13,650.64 : x
  2. Step 2: Convert to fraction form
    15,903.28/21,932.58 = 13,650.64/x
  3. Step 3: Cross multiply
    15,903.28x = 21,932.58 × 13,650.64
  4. Step 4: Simplify right side
    15,903.28x = 299,393,753.85
  5. Step 5: Solve for x
    x = 299,393,753.85/15,903.28
  6. Step 6: Final answer
    x = 18,825.91

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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.