Home / 21,600.20-29,808.91-12,646.87

Finding the Fourth Proportional to 21,600.20, 29,808.91 and 12,646.87

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Solution

The fourth proportional to 21,600.20, 29,808.91 and 12,646.87 is: 17,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.20 : 29,808.91 = 12,646.87 : x
  2. Step 2: Convert to fraction form
    21,600.20/29,808.91 = 12,646.87/x
  3. Step 3: Cross multiply
    21,600.20x = 29,808.91 × 12,646.87
  4. Step 4: Simplify right side
    21,600.20x = 376,989,350.90
  5. Step 5: Solve for x
    x = 376,989,350.90/21,600.20
  6. Step 6: Final answer
    x = 17,453.05

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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.