Home / 21,372.10-29,451.83-15,392.48

Finding the Fourth Proportional to 21,372.10, 29,451.83 and 15,392.48

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Solution

The fourth proportional to 21,372.10, 29,451.83 and 15,392.48 is: 21,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.10 : 29,451.83 = 15,392.48 : x
  2. Step 2: Convert to fraction form
    21,372.10/29,451.83 = 15,392.48/x
  3. Step 3: Cross multiply
    21,372.10x = 29,451.83 × 15,392.48
  4. Step 4: Simplify right side
    21,372.10x = 453,336,480.02
  5. Step 5: Solve for x
    x = 453,336,480.02/21,372.10
  6. Step 6: Final answer
    x = 21,211.60

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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.