Home / 22,203.78-30,641.70-12,772.98

Finding the Fourth Proportional to 22,203.78, 30,641.70 and 12,772.98

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Solution

The fourth proportional to 22,203.78, 30,641.70 and 12,772.98 is: 17,626.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,203.78 : 30,641.70 = 12,772.98 : x
  2. Step 2: Convert to fraction form
    22,203.78/30,641.70 = 12,772.98/x
  3. Step 3: Cross multiply
    22,203.78x = 30,641.70 × 12,772.98
  4. Step 4: Simplify right side
    22,203.78x = 391,385,821.27
  5. Step 5: Solve for x
    x = 391,385,821.27/22,203.78
  6. Step 6: Final answer
    x = 17,626.99

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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.