Home / 21,188.16-29,239.92-11,757.60

Finding the Fourth Proportional to 21,188.16, 29,239.92 and 11,757.60

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Solution

The fourth proportional to 21,188.16, 29,239.92 and 11,757.60 is: 16,225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.16 : 29,239.92 = 11,757.60 : x
  2. Step 2: Convert to fraction form
    21,188.16/29,239.92 = 11,757.60/x
  3. Step 3: Cross multiply
    21,188.16x = 29,239.92 × 11,757.60
  4. Step 4: Simplify right side
    21,188.16x = 343,791,283.39
  5. Step 5: Solve for x
    x = 343,791,283.39/21,188.16
  6. Step 6: Final answer
    x = 16,225.63

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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.