Home / 22,210.36-30,649.86-12,138.55

Finding the Fourth Proportional to 22,210.36, 30,649.86 and 12,138.55

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Solution

The fourth proportional to 22,210.36, 30,649.86 and 12,138.55 is: 16,750.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,210.36 : 30,649.86 = 12,138.55 : x
  2. Step 2: Convert to fraction form
    22,210.36/30,649.86 = 12,138.55/x
  3. Step 3: Cross multiply
    22,210.36x = 30,649.86 × 12,138.55
  4. Step 4: Simplify right side
    22,210.36x = 372,044,781.48
  5. Step 5: Solve for x
    x = 372,044,781.48/22,210.36
  6. Step 6: Final answer
    x = 16,750.96

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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.