Home / 21,391.76-32,089.26-5,809.16

Finding the Fourth Proportional to 21,391.76, 32,089.26 and 5,809.16

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Solution

The fourth proportional to 21,391.76, 32,089.26 and 5,809.16 is: 8,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.76 : 32,089.26 = 5,809.16 : x
  2. Step 2: Convert to fraction form
    21,391.76/32,089.26 = 5,809.16/x
  3. Step 3: Cross multiply
    21,391.76x = 32,089.26 × 5,809.16
  4. Step 4: Simplify right side
    21,391.76x = 186,411,645.62
  5. Step 5: Solve for x
    x = 186,411,645.62/21,391.76
  6. Step 6: Final answer
    x = 8,714.18

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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.