Home / 21,073.32-31,610.01-8,600.13

Finding the Fourth Proportional to 21,073.32, 31,610.01 and 8,600.13

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Solution

The fourth proportional to 21,073.32, 31,610.01 and 8,600.13 is: 12,900.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.32 : 31,610.01 = 8,600.13 : x
  2. Step 2: Convert to fraction form
    21,073.32/31,610.01 = 8,600.13/x
  3. Step 3: Cross multiply
    21,073.32x = 31,610.01 × 8,600.13
  4. Step 4: Simplify right side
    21,073.32x = 271,850,195.30
  5. Step 5: Solve for x
    x = 271,850,195.30/21,073.32
  6. Step 6: Final answer
    x = 12,900.21

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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.