Home / 19,427.31-29,113.38-8,871.39

Finding the Fourth Proportional to 19,427.31, 29,113.38 and 8,871.39

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Solution

The fourth proportional to 19,427.31, 29,113.38 and 8,871.39 is: 13,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,427.31 : 29,113.38 = 8,871.39 : x
  2. Step 2: Convert to fraction form
    19,427.31/29,113.38 = 8,871.39/x
  3. Step 3: Cross multiply
    19,427.31x = 29,113.38 × 8,871.39
  4. Step 4: Simplify right side
    19,427.31x = 258,276,148.20
  5. Step 5: Solve for x
    x = 258,276,148.20/19,427.31
  6. Step 6: Final answer
    x = 13,294.49

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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.