Home / 31,686.75-47,530.80-11,974.59

Finding the Fourth Proportional to 31,686.75, 47,530.80 and 11,974.59

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Solution

The fourth proportional to 31,686.75, 47,530.80 and 11,974.59 is: 17,962.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.75 : 47,530.80 = 11,974.59 : x
  2. Step 2: Convert to fraction form
    31,686.75/47,530.80 = 11,974.59/x
  3. Step 3: Cross multiply
    31,686.75x = 47,530.80 × 11,974.59
  4. Step 4: Simplify right side
    31,686.75x = 569,161,842.37
  5. Step 5: Solve for x
    x = 569,161,842.37/31,686.75
  6. Step 6: Final answer
    x = 17,962.14

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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.