Home / 20,468.35-28,246.02-11,515.84

Finding the Fourth Proportional to 20,468.35, 28,246.02 and 11,515.84

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Solution

The fourth proportional to 20,468.35, 28,246.02 and 11,515.84 is: 15,891.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.35 : 28,246.02 = 11,515.84 : x
  2. Step 2: Convert to fraction form
    20,468.35/28,246.02 = 11,515.84/x
  3. Step 3: Cross multiply
    20,468.35x = 28,246.02 × 11,515.84
  4. Step 4: Simplify right side
    20,468.35x = 325,276,646.96
  5. Step 5: Solve for x
    x = 325,276,646.96/20,468.35
  6. Step 6: Final answer
    x = 15,891.69

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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.