Home / 12,869.02-19,290.31-7,310.49

Finding the Fourth Proportional to 12,869.02, 19,290.31 and 7,310.49

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Solution

The fourth proportional to 12,869.02, 19,290.31 and 7,310.49 is: 10,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.02 : 19,290.31 = 7,310.49 : x
  2. Step 2: Convert to fraction form
    12,869.02/19,290.31 = 7,310.49/x
  3. Step 3: Cross multiply
    12,869.02x = 19,290.31 × 7,310.49
  4. Step 4: Simplify right side
    12,869.02x = 141,021,581.80
  5. Step 5: Solve for x
    x = 141,021,581.80/12,869.02
  6. Step 6: Final answer
    x = 10,958.23

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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.