Home / 22,200.36-30,637.24-12,129.78

Finding the Fourth Proportional to 22,200.36, 30,637.24 and 12,129.78

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Solution

The fourth proportional to 22,200.36, 30,637.24 and 12,129.78 is: 16,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.36 : 30,637.24 = 12,129.78 : x
  2. Step 2: Convert to fraction form
    22,200.36/30,637.24 = 12,129.78/x
  3. Step 3: Cross multiply
    22,200.36x = 30,637.24 × 12,129.78
  4. Step 4: Simplify right side
    22,200.36x = 371,622,981.01
  5. Step 5: Solve for x
    x = 371,622,981.01/22,200.36
  6. Step 6: Final answer
    x = 16,739.50

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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.