Home / 42,456.48-63,676.32-12,867.36

Finding the Fourth Proportional to 42,456.48, 63,676.32 and 12,867.36

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Solution

The fourth proportional to 42,456.48, 63,676.32 and 12,867.36 is: 19,298.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,456.48 : 63,676.32 = 12,867.36 : x
  2. Step 2: Convert to fraction form
    42,456.48/63,676.32 = 12,867.36/x
  3. Step 3: Cross multiply
    42,456.48x = 63,676.32 × 12,867.36
  4. Step 4: Simplify right side
    42,456.48x = 819,346,132.92
  5. Step 5: Solve for x
    x = 819,346,132.92/42,456.48
  6. Step 6: Final answer
    x = 19,298.49

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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.