Home / 28,423.36-39,249-17,831.20

Finding the Fourth Proportional to 28,423.36, 39,249 and 17,831.20

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Solution

The fourth proportional to 28,423.36, 39,249 and 17,831.20 is: 24,622.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.36 : 39,249 = 17,831.20 : x
  2. Step 2: Convert to fraction form
    28,423.36/39,249 = 17,831.20/x
  3. Step 3: Cross multiply
    28,423.36x = 39,249 × 17,831.20
  4. Step 4: Simplify right side
    28,423.36x = 699,856,768.80
  5. Step 5: Solve for x
    x = 699,856,768.80/28,423.36
  6. Step 6: Final answer
    x = 24,622.59

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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.