Home / 19,143.06-28,703.25-7,442.61

Finding the Fourth Proportional to 19,143.06, 28,703.25 and 7,442.61

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Solution

The fourth proportional to 19,143.06, 28,703.25 and 7,442.61 is: 11,159.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.06 : 28,703.25 = 7,442.61 : x
  2. Step 2: Convert to fraction form
    19,143.06/28,703.25 = 7,442.61/x
  3. Step 3: Cross multiply
    19,143.06x = 28,703.25 × 7,442.61
  4. Step 4: Simplify right side
    19,143.06x = 213,627,095.48
  5. Step 5: Solve for x
    x = 213,627,095.48/19,143.06
  6. Step 6: Final answer
    x = 11,159.51

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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.