Home / 21,273.60-31,911.48-8,124.06

Finding the Fourth Proportional to 21,273.60, 31,911.48 and 8,124.06

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Solution

The fourth proportional to 21,273.60, 31,911.48 and 8,124.06 is: 12,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.60 : 31,911.48 = 8,124.06 : x
  2. Step 2: Convert to fraction form
    21,273.60/31,911.48 = 8,124.06/x
  3. Step 3: Cross multiply
    21,273.60x = 31,911.48 × 8,124.06
  4. Step 4: Simplify right side
    21,273.60x = 259,250,778.21
  5. Step 5: Solve for x
    x = 259,250,778.21/21,273.60
  6. Step 6: Final answer
    x = 12,186.50

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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.