Home / 21,585.82-29,788.41-12,154.18

Finding the Fourth Proportional to 21,585.82, 29,788.41 and 12,154.18

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Solution

The fourth proportional to 21,585.82, 29,788.41 and 12,154.18 is: 16,772.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.82 : 29,788.41 = 12,154.18 : x
  2. Step 2: Convert to fraction form
    21,585.82/29,788.41 = 12,154.18/x
  3. Step 3: Cross multiply
    21,585.82x = 29,788.41 × 12,154.18
  4. Step 4: Simplify right side
    21,585.82x = 362,053,697.05
  5. Step 5: Solve for x
    x = 362,053,697.05/21,585.82
  6. Step 6: Final answer
    x = 16,772.76

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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.