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Finding the Fourth Proportional to 28,751.88, 43,129.92 and 9,030.18

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Solution

The fourth proportional to 28,751.88, 43,129.92 and 9,030.18 is: 13,545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.88 : 43,129.92 = 9,030.18 : x
  2. Step 2: Convert to fraction form
    28,751.88/43,129.92 = 9,030.18/x
  3. Step 3: Cross multiply
    28,751.88x = 43,129.92 × 9,030.18
  4. Step 4: Simplify right side
    28,751.88x = 389,470,940.99
  5. Step 5: Solve for x
    x = 389,470,940.99/28,751.88
  6. Step 6: Final answer
    x = 13,545.93

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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.