Home / 21,087.18-29,100.93-11,527.61

Finding the Fourth Proportional to 21,087.18, 29,100.93 and 11,527.61

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Solution

The fourth proportional to 21,087.18, 29,100.93 and 11,527.61 is: 15,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.18 : 29,100.93 = 11,527.61 : x
  2. Step 2: Convert to fraction form
    21,087.18/29,100.93 = 11,527.61/x
  3. Step 3: Cross multiply
    21,087.18x = 29,100.93 × 11,527.61
  4. Step 4: Simplify right side
    21,087.18x = 335,464,026.17
  5. Step 5: Solve for x
    x = 335,464,026.17/21,087.18
  6. Step 6: Final answer
    x = 15,908.43

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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.