Home / 10,325.52-15,480.99-5,128.56

Finding the Fourth Proportional to 10,325.52, 15,480.99 and 5,128.56

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Solution

The fourth proportional to 10,325.52, 15,480.99 and 5,128.56 is: 7,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,325.52 : 15,480.99 = 5,128.56 : x
  2. Step 2: Convert to fraction form
    10,325.52/15,480.99 = 5,128.56/x
  3. Step 3: Cross multiply
    10,325.52x = 15,480.99 × 5,128.56
  4. Step 4: Simplify right side
    10,325.52x = 79,395,186.07
  5. Step 5: Solve for x
    x = 79,395,186.07/10,325.52
  6. Step 6: Final answer
    x = 7,689.22

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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.