Home / 21,915.60-32,873.40-14,129.88

Finding the Fourth Proportional to 21,915.60, 32,873.40 and 14,129.88

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Solution

The fourth proportional to 21,915.60, 32,873.40 and 14,129.88 is: 21,194.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.60 : 32,873.40 = 14,129.88 : x
  2. Step 2: Convert to fraction form
    21,915.60/32,873.40 = 14,129.88/x
  3. Step 3: Cross multiply
    21,915.60x = 32,873.40 × 14,129.88
  4. Step 4: Simplify right side
    21,915.60x = 464,497,197.19
  5. Step 5: Solve for x
    x = 464,497,197.19/21,915.60
  6. Step 6: Final answer
    x = 21,194.82

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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.