Home / 20,708.04-28,577.13-11,276.64

Finding the Fourth Proportional to 20,708.04, 28,577.13 and 11,276.64

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Solution

The fourth proportional to 20,708.04, 28,577.13 and 11,276.64 is: 15,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.04 : 28,577.13 = 11,276.64 : x
  2. Step 2: Convert to fraction form
    20,708.04/28,577.13 = 11,276.64/x
  3. Step 3: Cross multiply
    20,708.04x = 28,577.13 × 11,276.64
  4. Step 4: Simplify right side
    20,708.04x = 322,254,007.24
  5. Step 5: Solve for x
    x = 322,254,007.24/20,708.04
  6. Step 6: Final answer
    x = 15,561.78

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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.