Home / 21,135.64-29,168.10-11,704.24

Finding the Fourth Proportional to 21,135.64, 29,168.10 and 11,704.24

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Solution

The fourth proportional to 21,135.64, 29,168.10 and 11,704.24 is: 16,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.64 : 29,168.10 = 11,704.24 : x
  2. Step 2: Convert to fraction form
    21,135.64/29,168.10 = 11,704.24/x
  3. Step 3: Cross multiply
    21,135.64x = 29,168.10 × 11,704.24
  4. Step 4: Simplify right side
    21,135.64x = 341,390,442.74
  5. Step 5: Solve for x
    x = 341,390,442.74/21,135.64
  6. Step 6: Final answer
    x = 16,152.36

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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.