Home / 20,707.76-28,577.22-11,276.84

Finding the Fourth Proportional to 20,707.76, 28,577.22 and 11,276.84

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Solution

The fourth proportional to 20,707.76, 28,577.22 and 11,276.84 is: 15,562.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.76 : 28,577.22 = 11,276.84 : x
  2. Step 2: Convert to fraction form
    20,707.76/28,577.22 = 11,276.84/x
  3. Step 3: Cross multiply
    20,707.76x = 28,577.22 × 11,276.84
  4. Step 4: Simplify right side
    20,707.76x = 322,260,737.58
  5. Step 5: Solve for x
    x = 322,260,737.58/20,707.76
  6. Step 6: Final answer
    x = 15,562.32

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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.