Home / 20,805.07-28,710.39-11,373.64

Finding the Fourth Proportional to 20,805.07, 28,710.39 and 11,373.64

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Solution

The fourth proportional to 20,805.07, 28,710.39 and 11,373.64 is: 15,695.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.07 : 28,710.39 = 11,373.64 : x
  2. Step 2: Convert to fraction form
    20,805.07/28,710.39 = 11,373.64/x
  3. Step 3: Cross multiply
    20,805.07x = 28,710.39 × 11,373.64
  4. Step 4: Simplify right side
    20,805.07x = 326,541,640.12
  5. Step 5: Solve for x
    x = 326,541,640.12/20,805.07
  6. Step 6: Final answer
    x = 15,695.29

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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.