Home / 15,210-20,992.23-8,922.42

Finding the Fourth Proportional to 15,210, 20,992.23 and 8,922.42

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Solution

The fourth proportional to 15,210, 20,992.23 and 8,922.42 is: 12,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210 : 20,992.23 = 8,922.42 : x
  2. Step 2: Convert to fraction form
    15,210/20,992.23 = 8,922.42/x
  3. Step 3: Cross multiply
    15,210x = 20,992.23 × 8,922.42
  4. Step 4: Simplify right side
    15,210x = 187,301,492.80
  5. Step 5: Solve for x
    x = 187,301,492.80/15,210
  6. Step 6: Final answer
    x = 12,314.37

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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.