Home / 21,322.64-29,405.22-16,857.02

Finding the Fourth Proportional to 21,322.64, 29,405.22 and 16,857.02

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Solution

The fourth proportional to 21,322.64, 29,405.22 and 16,857.02 is: 23,246.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.64 : 29,405.22 = 16,857.02 : x
  2. Step 2: Convert to fraction form
    21,322.64/29,405.22 = 16,857.02/x
  3. Step 3: Cross multiply
    21,322.64x = 29,405.22 × 16,857.02
  4. Step 4: Simplify right side
    21,322.64x = 495,684,381.64
  5. Step 5: Solve for x
    x = 495,684,381.64/21,322.64
  6. Step 6: Final answer
    x = 23,246.86

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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.