Home / 19,431.06-29,124.72-7,730.61

Finding the Fourth Proportional to 19,431.06, 29,124.72 and 7,730.61

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Solution

The fourth proportional to 19,431.06, 29,124.72 and 7,730.61 is: 11,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.06 : 29,124.72 = 7,730.61 : x
  2. Step 2: Convert to fraction form
    19,431.06/29,124.72 = 7,730.61/x
  3. Step 3: Cross multiply
    19,431.06x = 29,124.72 × 7,730.61
  4. Step 4: Simplify right side
    19,431.06x = 225,151,851.68
  5. Step 5: Solve for x
    x = 225,151,851.68/19,431.06
  6. Step 6: Final answer
    x = 11,587.21

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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.