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Finding the Fourth Proportional to 27,809.76, 38,377.58 and 15,063.10

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Solution

The fourth proportional to 27,809.76, 38,377.58 and 15,063.10 is: 20,787.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.76 : 38,377.58 = 15,063.10 : x
  2. Step 2: Convert to fraction form
    27,809.76/38,377.58 = 15,063.10/x
  3. Step 3: Cross multiply
    27,809.76x = 38,377.58 × 15,063.10
  4. Step 4: Simplify right side
    27,809.76x = 578,085,325.30
  5. Step 5: Solve for x
    x = 578,085,325.30/27,809.76
  6. Step 6: Final answer
    x = 20,787.14

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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.