Home / 20,577.96-28,397.54-11,146.60

Finding the Fourth Proportional to 20,577.96, 28,397.54 and 11,146.60

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Solution

The fourth proportional to 20,577.96, 28,397.54 and 11,146.60 is: 15,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.96 : 28,397.54 = 11,146.60 : x
  2. Step 2: Convert to fraction form
    20,577.96/28,397.54 = 11,146.60/x
  3. Step 3: Cross multiply
    20,577.96x = 28,397.54 × 11,146.60
  4. Step 4: Simplify right side
    20,577.96x = 316,536,019.36
  5. Step 5: Solve for x
    x = 316,536,019.36/20,577.96
  6. Step 6: Final answer
    x = 15,382.28

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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.