Home / 20,419.92-28,176.12-12,038.04

Finding the Fourth Proportional to 20,419.92, 28,176.12 and 12,038.04

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Solution

The fourth proportional to 20,419.92, 28,176.12 and 12,038.04 is: 16,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.92 : 28,176.12 = 12,038.04 : x
  2. Step 2: Convert to fraction form
    20,419.92/28,176.12 = 12,038.04/x
  3. Step 3: Cross multiply
    20,419.92x = 28,176.12 × 12,038.04
  4. Step 4: Simplify right side
    20,419.92x = 339,185,259.60
  5. Step 5: Solve for x
    x = 339,185,259.60/20,419.92
  6. Step 6: Final answer
    x = 16,610.51

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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.