Home / 15,119.55-20,861.82-8,831.94

Finding the Fourth Proportional to 15,119.55, 20,861.82 and 8,831.94

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Solution

The fourth proportional to 15,119.55, 20,861.82 and 8,831.94 is: 12,186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.55 : 20,861.82 = 8,831.94 : x
  2. Step 2: Convert to fraction form
    15,119.55/20,861.82 = 8,831.94/x
  3. Step 3: Cross multiply
    15,119.55x = 20,861.82 × 8,831.94
  4. Step 4: Simplify right side
    15,119.55x = 184,250,342.53
  5. Step 5: Solve for x
    x = 184,250,342.53/15,119.55
  6. Step 6: Final answer
    x = 12,186.23

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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.