Home / 22,207.72-30,647.84-12,777.72

Finding the Fourth Proportional to 22,207.72, 30,647.84 and 12,777.72

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Solution

The fourth proportional to 22,207.72, 30,647.84 and 12,777.72 is: 17,633.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,207.72 : 30,647.84 = 12,777.72 : x
  2. Step 2: Convert to fraction form
    22,207.72/30,647.84 = 12,777.72/x
  3. Step 3: Cross multiply
    22,207.72x = 30,647.84 × 12,777.72
  4. Step 4: Simplify right side
    22,207.72x = 391,609,518.12
  5. Step 5: Solve for x
    x = 391,609,518.12/22,207.72
  6. Step 6: Final answer
    x = 17,633.94

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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.