Home / 20,959.32-28,924.20-11,528.40

Finding the Fourth Proportional to 20,959.32, 28,924.20 and 11,528.40

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Solution

The fourth proportional to 20,959.32, 28,924.20 and 11,528.40 is: 15,909.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.32 : 28,924.20 = 11,528.40 : x
  2. Step 2: Convert to fraction form
    20,959.32/28,924.20 = 11,528.40/x
  3. Step 3: Cross multiply
    20,959.32x = 28,924.20 × 11,528.40
  4. Step 4: Simplify right side
    20,959.32x = 333,449,747.28
  5. Step 5: Solve for x
    x = 333,449,747.28/20,959.32
  6. Step 6: Final answer
    x = 15,909.38

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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.