Home / 20,708.16-28,577.71-11,276.72

Finding the Fourth Proportional to 20,708.16, 28,577.71 and 11,276.72

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Solution

The fourth proportional to 20,708.16, 28,577.71 and 11,276.72 is: 15,562.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.16 : 28,577.71 = 11,276.72 : x
  2. Step 2: Convert to fraction form
    20,708.16/28,577.71 = 11,276.72/x
  3. Step 3: Cross multiply
    20,708.16x = 28,577.71 × 11,276.72
  4. Step 4: Simplify right side
    20,708.16x = 322,262,812.28
  5. Step 5: Solve for x
    x = 322,262,812.28/20,708.16
  6. Step 6: Final answer
    x = 15,562.12

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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.