Home / 28,861.84-39,831.24-18,247.60

Finding the Fourth Proportional to 28,861.84, 39,831.24 and 18,247.60

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Solution

The fourth proportional to 28,861.84, 39,831.24 and 18,247.60 is: 25,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.84 : 39,831.24 = 18,247.60 : x
  2. Step 2: Convert to fraction form
    28,861.84/39,831.24 = 18,247.60/x
  3. Step 3: Cross multiply
    28,861.84x = 39,831.24 × 18,247.60
  4. Step 4: Simplify right side
    28,861.84x = 726,824,535.02
  5. Step 5: Solve for x
    x = 726,824,535.02/28,861.84
  6. Step 6: Final answer
    x = 25,182.89

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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.