Home / 19,988.44-29,985.88-10,123.72

Finding the Fourth Proportional to 19,988.44, 29,985.88 and 10,123.72

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Solution

The fourth proportional to 19,988.44, 29,985.88 and 10,123.72 is: 15,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.44 : 29,985.88 = 10,123.72 : x
  2. Step 2: Convert to fraction form
    19,988.44/29,985.88 = 10,123.72/x
  3. Step 3: Cross multiply
    19,988.44x = 29,985.88 × 10,123.72
  4. Step 4: Simplify right side
    19,988.44x = 303,568,653.07
  5. Step 5: Solve for x
    x = 303,568,653.07/19,988.44
  6. Step 6: Final answer
    x = 15,187.21

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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.