Home / 21,664.90-32,499.51-7,810.66

Finding the Fourth Proportional to 21,664.90, 32,499.51 and 7,810.66

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Solution

The fourth proportional to 21,664.90, 32,499.51 and 7,810.66 is: 11,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,664.90 : 32,499.51 = 7,810.66 : x
  2. Step 2: Convert to fraction form
    21,664.90/32,499.51 = 7,810.66/x
  3. Step 3: Cross multiply
    21,664.90x = 32,499.51 × 7,810.66
  4. Step 4: Simplify right side
    21,664.90x = 253,842,622.78
  5. Step 5: Solve for x
    x = 253,842,622.78/21,664.90
  6. Step 6: Final answer
    x = 11,716.77

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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.