Home / 20,961.95-28,925.72-12,346.76

Finding the Fourth Proportional to 20,961.95, 28,925.72 and 12,346.76

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Solution

The fourth proportional to 20,961.95, 28,925.72 and 12,346.76 is: 17,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.95 : 28,925.72 = 12,346.76 : x
  2. Step 2: Convert to fraction form
    20,961.95/28,925.72 = 12,346.76/x
  3. Step 3: Cross multiply
    20,961.95x = 28,925.72 × 12,346.76
  4. Step 4: Simplify right side
    20,961.95x = 357,138,716.30
  5. Step 5: Solve for x
    x = 357,138,716.30/20,961.95
  6. Step 6: Final answer
    x = 17,037.48

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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.