Home / 13,655.65-20,490.17-4,891.24

Finding the Fourth Proportional to 13,655.65, 20,490.17 and 4,891.24

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Solution

The fourth proportional to 13,655.65, 20,490.17 and 4,891.24 is: 7,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.65 : 20,490.17 = 4,891.24 : x
  2. Step 2: Convert to fraction form
    13,655.65/20,490.17 = 4,891.24/x
  3. Step 3: Cross multiply
    13,655.65x = 20,490.17 × 4,891.24
  4. Step 4: Simplify right side
    13,655.65x = 100,222,339.11
  5. Step 5: Solve for x
    x = 100,222,339.11/13,655.65
  6. Step 6: Final answer
    x = 7,339.26

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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.