Home / 15,401.69-21,252.54-8,687.42

Finding the Fourth Proportional to 15,401.69, 21,252.54 and 8,687.42

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Solution

The fourth proportional to 15,401.69, 21,252.54 and 8,687.42 is: 11,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.69 : 21,252.54 = 8,687.42 : x
  2. Step 2: Convert to fraction form
    15,401.69/21,252.54 = 8,687.42/x
  3. Step 3: Cross multiply
    15,401.69x = 21,252.54 × 8,687.42
  4. Step 4: Simplify right side
    15,401.69x = 184,629,794.18
  5. Step 5: Solve for x
    x = 184,629,794.18/15,401.69
  6. Step 6: Final answer
    x = 11,987.64

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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.