Home / 21,622.70-29,839.32-11,686.70

Finding the Fourth Proportional to 21,622.70, 29,839.32 and 11,686.70

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Solution

The fourth proportional to 21,622.70, 29,839.32 and 11,686.70 is: 16,127.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.70 : 29,839.32 = 11,686.70 : x
  2. Step 2: Convert to fraction form
    21,622.70/29,839.32 = 11,686.70/x
  3. Step 3: Cross multiply
    21,622.70x = 29,839.32 × 11,686.70
  4. Step 4: Simplify right side
    21,622.70x = 348,723,197.21
  5. Step 5: Solve for x
    x = 348,723,197.21/21,622.70
  6. Step 6: Final answer
    x = 16,127.64

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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.