Home / 22,188.85-30,619.47-12,115.35

Finding the Fourth Proportional to 22,188.85, 30,619.47 and 12,115.35

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Solution

The fourth proportional to 22,188.85, 30,619.47 and 12,115.35 is: 16,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.85 : 30,619.47 = 12,115.35 : x
  2. Step 2: Convert to fraction form
    22,188.85/30,619.47 = 12,115.35/x
  3. Step 3: Cross multiply
    22,188.85x = 30,619.47 × 12,115.35
  4. Step 4: Simplify right side
    22,188.85x = 370,965,595.86
  5. Step 5: Solve for x
    x = 370,965,595.86/22,188.85
  6. Step 6: Final answer
    x = 16,718.56

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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.