Home / 21,622.68-29,840.58-13,240.80

Finding the Fourth Proportional to 21,622.68, 29,840.58 and 13,240.80

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Solution

The fourth proportional to 21,622.68, 29,840.58 and 13,240.80 is: 18,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.68 : 29,840.58 = 13,240.80 : x
  2. Step 2: Convert to fraction form
    21,622.68/29,840.58 = 13,240.80/x
  3. Step 3: Cross multiply
    21,622.68x = 29,840.58 × 13,240.80
  4. Step 4: Simplify right side
    21,622.68x = 395,113,151.66
  5. Step 5: Solve for x
    x = 395,113,151.66/21,622.68
  6. Step 6: Final answer
    x = 18,273.09

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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.