Home / 18,961.96-28,298.75-16,860.15

Finding the Fourth Proportional to 18,961.96, 28,298.75 and 16,860.15

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Solution

The fourth proportional to 18,961.96, 28,298.75 and 16,860.15 is: 25,162.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.96 : 28,298.75 = 16,860.15 : x
  2. Step 2: Convert to fraction form
    18,961.96/28,298.75 = 16,860.15/x
  3. Step 3: Cross multiply
    18,961.96x = 28,298.75 × 16,860.15
  4. Step 4: Simplify right side
    18,961.96x = 477,121,169.81
  5. Step 5: Solve for x
    x = 477,121,169.81/18,961.96
  6. Step 6: Final answer
    x = 25,162.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.