Home / 20,103.68-30,151.29-12,966.54

Finding the Fourth Proportional to 20,103.68, 30,151.29 and 12,966.54

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Solution

The fourth proportional to 20,103.68, 30,151.29 and 12,966.54 is: 19,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.68 : 30,151.29 = 12,966.54 : x
  2. Step 2: Convert to fraction form
    20,103.68/30,151.29 = 12,966.54/x
  3. Step 3: Cross multiply
    20,103.68x = 30,151.29 × 12,966.54
  4. Step 4: Simplify right side
    20,103.68x = 390,957,907.84
  5. Step 5: Solve for x
    x = 390,957,907.84/20,103.68
  6. Step 6: Final answer
    x = 19,447.08

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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.