Home / 28,666.89-43,003.05-11,138.07

Finding the Fourth Proportional to 28,666.89, 43,003.05 and 11,138.07

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Solution

The fourth proportional to 28,666.89, 43,003.05 and 11,138.07 is: 16,708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.89 : 43,003.05 = 11,138.07 : x
  2. Step 2: Convert to fraction form
    28,666.89/43,003.05 = 11,138.07/x
  3. Step 3: Cross multiply
    28,666.89x = 43,003.05 × 11,138.07
  4. Step 4: Simplify right side
    28,666.89x = 478,970,981.11
  5. Step 5: Solve for x
    x = 478,970,981.11/28,666.89
  6. Step 6: Final answer
    x = 16,708.16

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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.