Home / 20,479.26-28,264.08-11,528.50

Finding the Fourth Proportional to 20,479.26, 28,264.08 and 11,528.50

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Solution

The fourth proportional to 20,479.26, 28,264.08 and 11,528.50 is: 15,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.26 : 28,264.08 = 11,528.50 : x
  2. Step 2: Convert to fraction form
    20,479.26/28,264.08 = 11,528.50/x
  3. Step 3: Cross multiply
    20,479.26x = 28,264.08 × 11,528.50
  4. Step 4: Simplify right side
    20,479.26x = 325,842,446.28
  5. Step 5: Solve for x
    x = 325,842,446.28/20,479.26
  6. Step 6: Final answer
    x = 15,910.85

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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.