Home / 21,181.34-31,772.02-8,699.24

Finding the Fourth Proportional to 21,181.34, 31,772.02 and 8,699.24

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Solution

The fourth proportional to 21,181.34, 31,772.02 and 8,699.24 is: 13,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.34 : 31,772.02 = 8,699.24 : x
  2. Step 2: Convert to fraction form
    21,181.34/31,772.02 = 8,699.24/x
  3. Step 3: Cross multiply
    21,181.34x = 31,772.02 × 8,699.24
  4. Step 4: Simplify right side
    21,181.34x = 276,392,427.26
  5. Step 5: Solve for x
    x = 276,392,427.26/21,181.34
  6. Step 6: Final answer
    x = 13,048.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.