Home / 20,866.26-28,795.40-11,306.39

Finding the Fourth Proportional to 20,866.26, 28,795.40 and 11,306.39

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Solution

The fourth proportional to 20,866.26, 28,795.40 and 11,306.39 is: 15,602.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.26 : 28,795.40 = 11,306.39 : x
  2. Step 2: Convert to fraction form
    20,866.26/28,795.40 = 11,306.39/x
  3. Step 3: Cross multiply
    20,866.26x = 28,795.40 × 11,306.39
  4. Step 4: Simplify right side
    20,866.26x = 325,571,822.10
  5. Step 5: Solve for x
    x = 325,571,822.10/20,866.26
  6. Step 6: Final answer
    x = 15,602.79

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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.