Home / 31,181.76-46,781.28-12,463.20

Finding the Fourth Proportional to 31,181.76, 46,781.28 and 12,463.20

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Solution

The fourth proportional to 31,181.76, 46,781.28 and 12,463.20 is: 18,698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.76 : 46,781.28 = 12,463.20 : x
  2. Step 2: Convert to fraction form
    31,181.76/46,781.28 = 12,463.20/x
  3. Step 3: Cross multiply
    31,181.76x = 46,781.28 × 12,463.20
  4. Step 4: Simplify right side
    31,181.76x = 583,044,448.90
  5. Step 5: Solve for x
    x = 583,044,448.90/31,181.76
  6. Step 6: Final answer
    x = 18,698.25

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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.