Home / 31,398.99-47,116.85-11,691.51

Finding the Fourth Proportional to 31,398.99, 47,116.85 and 11,691.51

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Solution

The fourth proportional to 31,398.99, 47,116.85 and 11,691.51 is: 17,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,398.99 : 47,116.85 = 11,691.51 : x
  2. Step 2: Convert to fraction form
    31,398.99/47,116.85 = 11,691.51/x
  3. Step 3: Cross multiply
    31,398.99x = 47,116.85 × 11,691.51
  4. Step 4: Simplify right side
    31,398.99x = 550,867,064.49
  5. Step 5: Solve for x
    x = 550,867,064.49/31,398.99
  6. Step 6: Final answer
    x = 17,544.10

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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.