Home / 21,152.78-29,190.33-11,592.35

Finding the Fourth Proportional to 21,152.78, 29,190.33 and 11,592.35

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Solution

The fourth proportional to 21,152.78, 29,190.33 and 11,592.35 is: 15,997.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.78 : 29,190.33 = 11,592.35 : x
  2. Step 2: Convert to fraction form
    21,152.78/29,190.33 = 11,592.35/x
  3. Step 3: Cross multiply
    21,152.78x = 29,190.33 × 11,592.35
  4. Step 4: Simplify right side
    21,152.78x = 338,384,376.02
  5. Step 5: Solve for x
    x = 338,384,376.02/21,152.78
  6. Step 6: Final answer
    x = 15,997.16

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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.