Home / 42,481.86-63,718.67-12,899.96

Finding the Fourth Proportional to 42,481.86, 63,718.67 and 12,899.96

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Solution

The fourth proportional to 42,481.86, 63,718.67 and 12,899.96 is: 19,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.86 : 63,718.67 = 12,899.96 : x
  2. Step 2: Convert to fraction form
    42,481.86/63,718.67 = 12,899.96/x
  3. Step 3: Cross multiply
    42,481.86x = 63,718.67 × 12,899.96
  4. Step 4: Simplify right side
    42,481.86x = 821,967,911.16
  5. Step 5: Solve for x
    x = 821,967,911.16/42,481.86
  6. Step 6: Final answer
    x = 19,348.68

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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.