Home / 31,904.49-47,860.11-13,185.93

Finding the Fourth Proportional to 31,904.49, 47,860.11 and 13,185.93

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Solution

The fourth proportional to 31,904.49, 47,860.11 and 13,185.93 is: 19,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,904.49 : 47,860.11 = 13,185.93 : x
  2. Step 2: Convert to fraction form
    31,904.49/47,860.11 = 13,185.93/x
  3. Step 3: Cross multiply
    31,904.49x = 47,860.11 × 13,185.93
  4. Step 4: Simplify right side
    31,904.49x = 631,080,060.25
  5. Step 5: Solve for x
    x = 631,080,060.25/31,904.49
  6. Step 6: Final answer
    x = 19,780.29

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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.