Home / 20,712.77-28,583.66-11,281.37

Finding the Fourth Proportional to 20,712.77, 28,583.66 and 11,281.37

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Solution

The fourth proportional to 20,712.77, 28,583.66 and 11,281.37 is: 15,568.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.77 : 28,583.66 = 11,281.37 : x
  2. Step 2: Convert to fraction form
    20,712.77/28,583.66 = 11,281.37/x
  3. Step 3: Cross multiply
    20,712.77x = 28,583.66 × 11,281.37
  4. Step 4: Simplify right side
    20,712.77x = 322,462,788.01
  5. Step 5: Solve for x
    x = 322,462,788.01/20,712.77
  6. Step 6: Final answer
    x = 15,568.31

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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.