Home / 20,456.61-28,232.25-12,504.12

Finding the Fourth Proportional to 20,456.61, 28,232.25 and 12,504.12

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Solution

The fourth proportional to 20,456.61, 28,232.25 and 12,504.12 is: 17,256.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.61 : 28,232.25 = 12,504.12 : x
  2. Step 2: Convert to fraction form
    20,456.61/28,232.25 = 12,504.12/x
  3. Step 3: Cross multiply
    20,456.61x = 28,232.25 × 12,504.12
  4. Step 4: Simplify right side
    20,456.61x = 353,019,441.87
  5. Step 5: Solve for x
    x = 353,019,441.87/20,456.61
  6. Step 6: Final answer
    x = 17,256.99

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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.