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Finding the Fourth Proportional to 27,575.28, 38,054.72 and 15,639.12

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Solution

The fourth proportional to 27,575.28, 38,054.72 and 15,639.12 is: 21,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,575.28 : 38,054.72 = 15,639.12 : x
  2. Step 2: Convert to fraction form
    27,575.28/38,054.72 = 15,639.12/x
  3. Step 3: Cross multiply
    27,575.28x = 38,054.72 × 15,639.12
  4. Step 4: Simplify right side
    27,575.28x = 595,142,332.65
  5. Step 5: Solve for x
    x = 595,142,332.65/27,575.28
  6. Step 6: Final answer
    x = 21,582.46

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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.