Home / 21,622.64-29,839.23-11,686.64

Finding the Fourth Proportional to 21,622.64, 29,839.23 and 11,686.64

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Solution

The fourth proportional to 21,622.64, 29,839.23 and 11,686.64 is: 16,127.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.64 : 29,839.23 = 11,686.64 : x
  2. Step 2: Convert to fraction form
    21,622.64/29,839.23 = 11,686.64/x
  3. Step 3: Cross multiply
    21,622.64x = 29,839.23 × 11,686.64
  4. Step 4: Simplify right side
    21,622.64x = 348,720,338.89
  5. Step 5: Solve for x
    x = 348,720,338.89/21,622.64
  6. Step 6: Final answer
    x = 16,127.56

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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.