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Finding the Fourth Proportional to 21,887.80, 32,831.70 and 16,703.80

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Solution

The fourth proportional to 21,887.80, 32,831.70 and 16,703.80 is: 25,055.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.80 : 32,831.70 = 16,703.80 : x
  2. Step 2: Convert to fraction form
    21,887.80/32,831.70 = 16,703.80/x
  3. Step 3: Cross multiply
    21,887.80x = 32,831.70 × 16,703.80
  4. Step 4: Simplify right side
    21,887.80x = 548,414,150.46
  5. Step 5: Solve for x
    x = 548,414,150.46/21,887.80
  6. Step 6: Final answer
    x = 25,055.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.