Home / 20,708.58-28,577.88-11,277.12

Finding the Fourth Proportional to 20,708.58, 28,577.88 and 11,277.12

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Solution

The fourth proportional to 20,708.58, 28,577.88 and 11,277.12 is: 15,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.58 : 28,577.88 = 11,277.12 : x
  2. Step 2: Convert to fraction form
    20,708.58/28,577.88 = 11,277.12/x
  3. Step 3: Cross multiply
    20,708.58x = 28,577.88 × 11,277.12
  4. Step 4: Simplify right side
    20,708.58x = 322,276,182.11
  5. Step 5: Solve for x
    x = 322,276,182.11/20,708.58
  6. Step 6: Final answer
    x = 15,562.45

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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.