Home / 21,150.32-31,725.52-8,668.02

Finding the Fourth Proportional to 21,150.32, 31,725.52 and 8,668.02

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Solution

The fourth proportional to 21,150.32, 31,725.52 and 8,668.02 is: 13,002.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.32 : 31,725.52 = 8,668.02 : x
  2. Step 2: Convert to fraction form
    21,150.32/31,725.52 = 8,668.02/x
  3. Step 3: Cross multiply
    21,150.32x = 31,725.52 × 8,668.02
  4. Step 4: Simplify right side
    21,150.32x = 274,997,420.20
  5. Step 5: Solve for x
    x = 274,997,420.20/21,150.32
  6. Step 6: Final answer
    x = 13,002.04

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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.