Home / 28,440.48-42,661.68-8,717.28

Finding the Fourth Proportional to 28,440.48, 42,661.68 and 8,717.28

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Solution

The fourth proportional to 28,440.48, 42,661.68 and 8,717.28 is: 13,076.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.48 : 42,661.68 = 8,717.28 : x
  2. Step 2: Convert to fraction form
    28,440.48/42,661.68 = 8,717.28/x
  3. Step 3: Cross multiply
    28,440.48x = 42,661.68 × 8,717.28
  4. Step 4: Simplify right side
    28,440.48x = 371,893,809.83
  5. Step 5: Solve for x
    x = 371,893,809.83/28,440.48
  6. Step 6: Final answer
    x = 13,076.21

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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.