Home / 21,421.86-32,076.90-17,239.02

Finding the Fourth Proportional to 21,421.86, 32,076.90 and 17,239.02

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Solution

The fourth proportional to 21,421.86, 32,076.90 and 17,239.02 is: 25,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.86 : 32,076.90 = 17,239.02 : x
  2. Step 2: Convert to fraction form
    21,421.86/32,076.90 = 17,239.02/x
  3. Step 3: Cross multiply
    21,421.86x = 32,076.90 × 17,239.02
  4. Step 4: Simplify right side
    21,421.86x = 552,974,320.64
  5. Step 5: Solve for x
    x = 552,974,320.64/21,421.86
  6. Step 6: Final answer
    x = 25,813.55

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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.