Home / 20,542.69-28,348.80-11,111.23

Finding the Fourth Proportional to 20,542.69, 28,348.80 and 11,111.23

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Solution

The fourth proportional to 20,542.69, 28,348.80 and 11,111.23 is: 15,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.69 : 28,348.80 = 11,111.23 : x
  2. Step 2: Convert to fraction form
    20,542.69/28,348.80 = 11,111.23/x
  3. Step 3: Cross multiply
    20,542.69x = 28,348.80 × 11,111.23
  4. Step 4: Simplify right side
    20,542.69x = 314,990,037.02
  5. Step 5: Solve for x
    x = 314,990,037.02/20,542.69
  6. Step 6: Final answer
    x = 15,333.44

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Double scale
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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.