Home / 20,000.07-27,600.30-13,959.09

Finding the Fourth Proportional to 20,000.07, 27,600.30 and 13,959.09

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Solution

The fourth proportional to 20,000.07, 27,600.30 and 13,959.09 is: 19,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.07 : 27,600.30 = 13,959.09 : x
  2. Step 2: Convert to fraction form
    20,000.07/27,600.30 = 13,959.09/x
  3. Step 3: Cross multiply
    20,000.07x = 27,600.30 × 13,959.09
  4. Step 4: Simplify right side
    20,000.07x = 385,275,071.73
  5. Step 5: Solve for x
    x = 385,275,071.73/20,000.07
  6. Step 6: Final answer
    x = 19,263.69

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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.