Home / 21,421.61-32,076.53-17,238.77

Finding the Fourth Proportional to 21,421.61, 32,076.53 and 17,238.77

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Solution

The fourth proportional to 21,421.61, 32,076.53 and 17,238.77 is: 25,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.61 : 32,076.53 = 17,238.77 : x
  2. Step 2: Convert to fraction form
    21,421.61/32,076.53 = 17,238.77/x
  3. Step 3: Cross multiply
    21,421.61x = 32,076.53 × 17,238.77
  4. Step 4: Simplify right side
    21,421.61x = 552,959,917.07
  5. Step 5: Solve for x
    x = 552,959,917.07/21,421.61
  6. Step 6: Final answer
    x = 25,813.18

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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.