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Finding the Fourth Proportional to 28,025.22, 38,674.03 and 15,278.65

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Solution

The fourth proportional to 28,025.22, 38,674.03 and 15,278.65 is: 21,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.22 : 38,674.03 = 15,278.65 : x
  2. Step 2: Convert to fraction form
    28,025.22/38,674.03 = 15,278.65/x
  3. Step 3: Cross multiply
    28,025.22x = 38,674.03 × 15,278.65
  4. Step 4: Simplify right side
    28,025.22x = 590,886,968.46
  5. Step 5: Solve for x
    x = 590,886,968.46/28,025.22
  6. Step 6: Final answer
    x = 21,084.12

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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.