Home / 22,203.72-30,647.70-12,778.92

Finding the Fourth Proportional to 22,203.72, 30,647.70 and 12,778.92

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Solution

The fourth proportional to 22,203.72, 30,647.70 and 12,778.92 is: 17,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,203.72 : 30,647.70 = 12,778.92 : x
  2. Step 2: Convert to fraction form
    22,203.72/30,647.70 = 12,778.92/x
  3. Step 3: Cross multiply
    22,203.72x = 30,647.70 × 12,778.92
  4. Step 4: Simplify right side
    22,203.72x = 391,644,506.48
  5. Step 5: Solve for x
    x = 391,644,506.48/22,203.72
  6. Step 6: Final answer
    x = 17,638.69

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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.