Home / 10,238.80-15,350.10-5,621.80

Finding the Fourth Proportional to 10,238.80, 15,350.10 and 5,621.80

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Solution

The fourth proportional to 10,238.80, 15,350.10 and 5,621.80 is: 8,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.80 : 15,350.10 = 5,621.80 : x
  2. Step 2: Convert to fraction form
    10,238.80/15,350.10 = 5,621.80/x
  3. Step 3: Cross multiply
    10,238.80x = 15,350.10 × 5,621.80
  4. Step 4: Simplify right side
    10,238.80x = 86,295,192.18
  5. Step 5: Solve for x
    x = 86,295,192.18/10,238.80
  6. Step 6: Final answer
    x = 8,428.25

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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.