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Finding the Fourth Proportional to 19,792.72, 27,320.28 and 13,084.28

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Solution

The fourth proportional to 19,792.72, 27,320.28 and 13,084.28 is: 18,060.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,792.72 : 27,320.28 = 13,084.28 : x
  2. Step 2: Convert to fraction form
    19,792.72/27,320.28 = 13,084.28/x
  3. Step 3: Cross multiply
    19,792.72x = 27,320.28 × 13,084.28
  4. Step 4: Simplify right side
    19,792.72x = 357,466,193.20
  5. Step 5: Solve for x
    x = 357,466,193.20/19,792.72
  6. Step 6: Final answer
    x = 18,060.49

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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.