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Finding the Fourth Proportional to 19,881.34, 27,436.59 and 10,929.22

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Solution

The fourth proportional to 19,881.34, 27,436.59 and 10,929.22 is: 15,082.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.34 : 27,436.59 = 10,929.22 : x
  2. Step 2: Convert to fraction form
    19,881.34/27,436.59 = 10,929.22/x
  3. Step 3: Cross multiply
    19,881.34x = 27,436.59 × 10,929.22
  4. Step 4: Simplify right side
    19,881.34x = 299,860,528.16
  5. Step 5: Solve for x
    x = 299,860,528.16/19,881.34
  6. Step 6: Final answer
    x = 15,082.51

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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.