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Finding the Fourth Proportional to 28,989.99, 43,489.09 and 9,263.93

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Solution

The fourth proportional to 28,989.99, 43,489.09 and 9,263.93 is: 13,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.99 : 43,489.09 = 9,263.93 : x
  2. Step 2: Convert to fraction form
    28,989.99/43,489.09 = 9,263.93/x
  3. Step 3: Cross multiply
    28,989.99x = 43,489.09 × 9,263.93
  4. Step 4: Simplify right side
    28,989.99x = 402,879,971.09
  5. Step 5: Solve for x
    x = 402,879,971.09/28,989.99
  6. Step 6: Final answer
    x = 13,897.21

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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.