Home / 31,988.79-47,968.38-11,983.41

Finding the Fourth Proportional to 31,988.79, 47,968.38 and 11,983.41

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Solution

The fourth proportional to 31,988.79, 47,968.38 and 11,983.41 is: 17,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.79 : 47,968.38 = 11,983.41 : x
  2. Step 2: Convert to fraction form
    31,988.79/47,968.38 = 11,983.41/x
  3. Step 3: Cross multiply
    31,988.79x = 47,968.38 × 11,983.41
  4. Step 4: Simplify right side
    31,988.79x = 574,824,764.58
  5. Step 5: Solve for x
    x = 574,824,764.58/31,988.79
  6. Step 6: Final answer
    x = 17,969.57

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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.