Home / 21,200.60-31,801.57-10,664.86

Finding the Fourth Proportional to 21,200.60, 31,801.57 and 10,664.86

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Solution

The fourth proportional to 21,200.60, 31,801.57 and 10,664.86 is: 15,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.60 : 31,801.57 = 10,664.86 : x
  2. Step 2: Convert to fraction form
    21,200.60/31,801.57 = 10,664.86/x
  3. Step 3: Cross multiply
    21,200.60x = 31,801.57 × 10,664.86
  4. Step 4: Simplify right side
    21,200.60x = 339,159,358.24
  5. Step 5: Solve for x
    x = 339,159,358.24/21,200.60
  6. Step 6: Final answer
    x = 15,997.63

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1.5x scale

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.