Home / 20,328.07-28,053.91-11,375.49

Finding the Fourth Proportional to 20,328.07, 28,053.91 and 11,375.49

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Solution

The fourth proportional to 20,328.07, 28,053.91 and 11,375.49 is: 15,698.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.07 : 28,053.91 = 11,375.49 : x
  2. Step 2: Convert to fraction form
    20,328.07/28,053.91 = 11,375.49/x
  3. Step 3: Cross multiply
    20,328.07x = 28,053.91 × 11,375.49
  4. Step 4: Simplify right side
    20,328.07x = 319,127,092.09
  5. Step 5: Solve for x
    x = 319,127,092.09/20,328.07
  6. Step 6: Final answer
    x = 15,698.84

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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.