Home / 21,587.55-29,791.32-12,028.08

Finding the Fourth Proportional to 21,587.55, 29,791.32 and 12,028.08

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Solution

The fourth proportional to 21,587.55, 29,791.32 and 12,028.08 is: 16,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.55 : 29,791.32 = 12,028.08 : x
  2. Step 2: Convert to fraction form
    21,587.55/29,791.32 = 12,028.08/x
  3. Step 3: Cross multiply
    21,587.55x = 29,791.32 × 12,028.08
  4. Step 4: Simplify right side
    21,587.55x = 358,332,380.27
  5. Step 5: Solve for x
    x = 358,332,380.27/21,587.55
  6. Step 6: Final answer
    x = 16,599.03

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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.