Home / 13,290.24-19,939.02-5,387.88

Finding the Fourth Proportional to 13,290.24, 19,939.02 and 5,387.88

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Solution

The fourth proportional to 13,290.24, 19,939.02 and 5,387.88 is: 8,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.24 : 19,939.02 = 5,387.88 : x
  2. Step 2: Convert to fraction form
    13,290.24/19,939.02 = 5,387.88/x
  3. Step 3: Cross multiply
    13,290.24x = 19,939.02 × 5,387.88
  4. Step 4: Simplify right side
    13,290.24x = 107,429,047.08
  5. Step 5: Solve for x
    x = 107,429,047.08/13,290.24
  6. Step 6: Final answer
    x = 8,083.30

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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.