Home / 28,137.20-38,831.16-16,204.40

Finding the Fourth Proportional to 28,137.20, 38,831.16 and 16,204.40

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Solution

The fourth proportional to 28,137.20, 38,831.16 and 16,204.40 is: 22,363.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.20 : 38,831.16 = 16,204.40 : x
  2. Step 2: Convert to fraction form
    28,137.20/38,831.16 = 16,204.40/x
  3. Step 3: Cross multiply
    28,137.20x = 38,831.16 × 16,204.40
  4. Step 4: Simplify right side
    28,137.20x = 629,235,649.10
  5. Step 5: Solve for x
    x = 629,235,649.10/28,137.20
  6. Step 6: Final answer
    x = 22,363.12

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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.