Home / 21,644.90-32,479.59-11,784.86

Finding the Fourth Proportional to 21,644.90, 32,479.59 and 11,784.86

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Solution

The fourth proportional to 21,644.90, 32,479.59 and 11,784.86 is: 17,683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.90 : 32,479.59 = 11,784.86 : x
  2. Step 2: Convert to fraction form
    21,644.90/32,479.59 = 11,784.86/x
  3. Step 3: Cross multiply
    21,644.90x = 32,479.59 × 11,784.86
  4. Step 4: Simplify right side
    21,644.90x = 382,767,421.01
  5. Step 5: Solve for x
    x = 382,767,421.01/21,644.90
  6. Step 6: Final answer
    x = 17,683.95

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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.