Home / 31,104.06-46,642.80-11,857.20

Finding the Fourth Proportional to 31,104.06, 46,642.80 and 11,857.20

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Solution

The fourth proportional to 31,104.06, 46,642.80 and 11,857.20 is: 17,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,104.06 : 46,642.80 = 11,857.20 : x
  2. Step 2: Convert to fraction form
    31,104.06/46,642.80 = 11,857.20/x
  3. Step 3: Cross multiply
    31,104.06x = 46,642.80 × 11,857.20
  4. Step 4: Simplify right side
    31,104.06x = 553,053,008.16
  5. Step 5: Solve for x
    x = 553,053,008.16/31,104.06
  6. Step 6: Final answer
    x = 17,780.73

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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.