Home / 21,411.15-29,546.78-11,851.43

Finding the Fourth Proportional to 21,411.15, 29,546.78 and 11,851.43

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Solution

The fourth proportional to 21,411.15, 29,546.78 and 11,851.43 is: 16,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.15 : 29,546.78 = 11,851.43 : x
  2. Step 2: Convert to fraction form
    21,411.15/29,546.78 = 11,851.43/x
  3. Step 3: Cross multiply
    21,411.15x = 29,546.78 × 11,851.43
  4. Step 4: Simplify right side
    21,411.15x = 350,171,609.51
  5. Step 5: Solve for x
    x = 350,171,609.51/21,411.15
  6. Step 6: Final answer
    x = 16,354.64

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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.