Home / 20,275.25-27,981.59-11,323.44

Finding the Fourth Proportional to 20,275.25, 27,981.59 and 11,323.44

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Solution

The fourth proportional to 20,275.25, 27,981.59 and 11,323.44 is: 15,627.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.25 : 27,981.59 = 11,323.44 : x
  2. Step 2: Convert to fraction form
    20,275.25/27,981.59 = 11,323.44/x
  3. Step 3: Cross multiply
    20,275.25x = 27,981.59 × 11,323.44
  4. Step 4: Simplify right side
    20,275.25x = 316,847,798.85
  5. Step 5: Solve for x
    x = 316,847,798.85/20,275.25
  6. Step 6: Final answer
    x = 15,627.32

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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.