Home / 21,635.56-29,812.76-15,961.32

Finding the Fourth Proportional to 21,635.56, 29,812.76 and 15,961.32

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Solution

The fourth proportional to 21,635.56, 29,812.76 and 15,961.32 is: 21,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,635.56 : 29,812.76 = 15,961.32 : x
  2. Step 2: Convert to fraction form
    21,635.56/29,812.76 = 15,961.32/x
  3. Step 3: Cross multiply
    21,635.56x = 29,812.76 × 15,961.32
  4. Step 4: Simplify right side
    21,635.56x = 475,851,002.44
  5. Step 5: Solve for x
    x = 475,851,002.44/21,635.56
  6. Step 6: Final answer
    x = 21,993.93

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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.