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Finding the Fourth Proportional to 15,714.72, 21,679.60 and 10,048.24

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Solution

The fourth proportional to 15,714.72, 21,679.60 and 10,048.24 is: 13,862.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.72 : 21,679.60 = 10,048.24 : x
  2. Step 2: Convert to fraction form
    15,714.72/21,679.60 = 10,048.24/x
  3. Step 3: Cross multiply
    15,714.72x = 21,679.60 × 10,048.24
  4. Step 4: Simplify right side
    15,714.72x = 217,841,823.90
  5. Step 5: Solve for x
    x = 217,841,823.90/15,714.72
  6. Step 6: Final answer
    x = 13,862.28

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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.