Home / 21,025.28-29,019.09-12,078.92

Finding the Fourth Proportional to 21,025.28, 29,019.09 and 12,078.92

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Solution

The fourth proportional to 21,025.28, 29,019.09 and 12,078.92 is: 16,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.28 : 29,019.09 = 12,078.92 : x
  2. Step 2: Convert to fraction form
    21,025.28/29,019.09 = 12,078.92/x
  3. Step 3: Cross multiply
    21,025.28x = 29,019.09 × 12,078.92
  4. Step 4: Simplify right side
    21,025.28x = 350,519,266.58
  5. Step 5: Solve for x
    x = 350,519,266.58/21,025.28
  6. Step 6: Final answer
    x = 16,671.32

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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.