Home / 15,282.57-21,102.42-12,450.42

Finding the Fourth Proportional to 15,282.57, 21,102.42 and 12,450.42

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Solution

The fourth proportional to 15,282.57, 21,102.42 and 12,450.42 is: 17,191.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.57 : 21,102.42 = 12,450.42 : x
  2. Step 2: Convert to fraction form
    15,282.57/21,102.42 = 12,450.42/x
  3. Step 3: Cross multiply
    15,282.57x = 21,102.42 × 12,450.42
  4. Step 4: Simplify right side
    15,282.57x = 262,733,992.02
  5. Step 5: Solve for x
    x = 262,733,992.02/15,282.57
  6. Step 6: Final answer
    x = 17,191.74

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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.