Home / 20,028.64-30,022.40-10,137.92

Finding the Fourth Proportional to 20,028.64, 30,022.40 and 10,137.92

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Solution

The fourth proportional to 20,028.64, 30,022.40 and 10,137.92 is: 15,196.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.64 : 30,022.40 = 10,137.92 : x
  2. Step 2: Convert to fraction form
    20,028.64/30,022.40 = 10,137.92/x
  3. Step 3: Cross multiply
    20,028.64x = 30,022.40 × 10,137.92
  4. Step 4: Simplify right side
    20,028.64x = 304,364,689.41
  5. Step 5: Solve for x
    x = 304,364,689.41/20,028.64
  6. Step 6: Final answer
    x = 15,196.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.