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Finding the Fourth Proportional to 22,764.64, 34,123.47 and 8,720.83

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Solution

The fourth proportional to 22,764.64, 34,123.47 and 8,720.83 is: 13,072.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,764.64 : 34,123.47 = 8,720.83 : x
  2. Step 2: Convert to fraction form
    22,764.64/34,123.47 = 8,720.83/x
  3. Step 3: Cross multiply
    22,764.64x = 34,123.47 × 8,720.83
  4. Step 4: Simplify right side
    22,764.64x = 297,584,980.88
  5. Step 5: Solve for x
    x = 297,584,980.88/22,764.64
  6. Step 6: Final answer
    x = 13,072.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.