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Finding the Fourth Proportional to 28,330.77, 39,097.85 and 15,755.25

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Solution

The fourth proportional to 28,330.77, 39,097.85 and 15,755.25 is: 21,743.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.77 : 39,097.85 = 15,755.25 : x
  2. Step 2: Convert to fraction form
    28,330.77/39,097.85 = 15,755.25/x
  3. Step 3: Cross multiply
    28,330.77x = 39,097.85 × 15,755.25
  4. Step 4: Simplify right side
    28,330.77x = 615,996,322.44
  5. Step 5: Solve for x
    x = 615,996,322.44/28,330.77
  6. Step 6: Final answer
    x = 21,743.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.