Home / 21,199.32-29,218.32-15,884.91

Finding the Fourth Proportional to 21,199.32, 29,218.32 and 15,884.91

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Solution

The fourth proportional to 21,199.32, 29,218.32 and 15,884.91 is: 21,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.32 : 29,218.32 = 15,884.91 : x
  2. Step 2: Convert to fraction form
    21,199.32/29,218.32 = 15,884.91/x
  3. Step 3: Cross multiply
    21,199.32x = 29,218.32 × 15,884.91
  4. Step 4: Simplify right side
    21,199.32x = 464,130,383.55
  5. Step 5: Solve for x
    x = 464,130,383.55/21,199.32
  6. Step 6: Final answer
    x = 21,893.64

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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.