Home / 20,276.07-27,981.05-11,323.91

Finding the Fourth Proportional to 20,276.07, 27,981.05 and 11,323.91

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Solution

The fourth proportional to 20,276.07, 27,981.05 and 11,323.91 is: 15,627.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.07 : 27,981.05 = 11,323.91 : x
  2. Step 2: Convert to fraction form
    20,276.07/27,981.05 = 11,323.91/x
  3. Step 3: Cross multiply
    20,276.07x = 27,981.05 × 11,323.91
  4. Step 4: Simplify right side
    20,276.07x = 316,854,891.91
  5. Step 5: Solve for x
    x = 316,854,891.91/20,276.07
  6. Step 6: Final answer
    x = 15,627.04

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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.