Home / 21,623.64-29,840.61-11,687.64

Finding the Fourth Proportional to 21,623.64, 29,840.61 and 11,687.64

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Solution

The fourth proportional to 21,623.64, 29,840.61 and 11,687.64 is: 16,128.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.64 : 29,840.61 = 11,687.64 : x
  2. Step 2: Convert to fraction form
    21,623.64/29,840.61 = 11,687.64/x
  3. Step 3: Cross multiply
    21,623.64x = 29,840.61 × 11,687.64
  4. Step 4: Simplify right side
    21,623.64x = 348,766,307.06
  5. Step 5: Solve for x
    x = 348,766,307.06/21,623.64
  6. Step 6: Final answer
    x = 16,128.94

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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.