Home / 22,200.64-30,637.14-12,129.20

Finding the Fourth Proportional to 22,200.64, 30,637.14 and 12,129.20

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Solution

The fourth proportional to 22,200.64, 30,637.14 and 12,129.20 is: 16,738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.64 : 30,637.14 = 12,129.20 : x
  2. Step 2: Convert to fraction form
    22,200.64/30,637.14 = 12,129.20/x
  3. Step 3: Cross multiply
    22,200.64x = 30,637.14 × 12,129.20
  4. Step 4: Simplify right side
    22,200.64x = 371,603,998.49
  5. Step 5: Solve for x
    x = 371,603,998.49/22,200.64
  6. Step 6: Final answer
    x = 16,738.44

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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.