Home / 21,628.19-29,845.99-12,197.63

Finding the Fourth Proportional to 21,628.19, 29,845.99 and 12,197.63

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Solution

The fourth proportional to 21,628.19, 29,845.99 and 12,197.63 is: 16,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.19 : 29,845.99 = 12,197.63 : x
  2. Step 2: Convert to fraction form
    21,628.19/29,845.99 = 12,197.63/x
  3. Step 3: Cross multiply
    21,628.19x = 29,845.99 × 12,197.63
  4. Step 4: Simplify right side
    21,628.19x = 364,050,343.00
  5. Step 5: Solve for x
    x = 364,050,343.00/21,628.19
  6. Step 6: Final answer
    x = 16,832.21

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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.