Home / 28,530.03-42,813.41-15,391.47

Finding the Fourth Proportional to 28,530.03, 42,813.41 and 15,391.47

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Solution

The fourth proportional to 28,530.03, 42,813.41 and 15,391.47 is: 23,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.03 : 42,813.41 = 15,391.47 : x
  2. Step 2: Convert to fraction form
    28,530.03/42,813.41 = 15,391.47/x
  3. Step 3: Cross multiply
    28,530.03x = 42,813.41 × 15,391.47
  4. Step 4: Simplify right side
    28,530.03x = 658,961,238.66
  5. Step 5: Solve for x
    x = 658,961,238.66/28,530.03
  6. Step 6: Final answer
    x = 23,097.11

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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.