Home / 21,087.30-29,099.59-11,527.02

Finding the Fourth Proportional to 21,087.30, 29,099.59 and 11,527.02

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Solution

The fourth proportional to 21,087.30, 29,099.59 and 11,527.02 is: 15,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.30 : 29,099.59 = 11,527.02 : x
  2. Step 2: Convert to fraction form
    21,087.30/29,099.59 = 11,527.02/x
  3. Step 3: Cross multiply
    21,087.30x = 29,099.59 × 11,527.02
  4. Step 4: Simplify right side
    21,087.30x = 335,431,527.10
  5. Step 5: Solve for x
    x = 335,431,527.10/21,087.30
  6. Step 6: Final answer
    x = 15,906.80

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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.