Home / 21,225.20-29,289.35-11,664.88

Finding the Fourth Proportional to 21,225.20, 29,289.35 and 11,664.88

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Solution

The fourth proportional to 21,225.20, 29,289.35 and 11,664.88 is: 16,096.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.20 : 29,289.35 = 11,664.88 : x
  2. Step 2: Convert to fraction form
    21,225.20/29,289.35 = 11,664.88/x
  3. Step 3: Cross multiply
    21,225.20x = 29,289.35 × 11,664.88
  4. Step 4: Simplify right side
    21,225.20x = 341,656,548.26
  5. Step 5: Solve for x
    x = 341,656,548.26/21,225.20
  6. Step 6: Final answer
    x = 16,096.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.