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Finding the Fourth Proportional to 19,390.24, 29,077.80 and 8,302.24

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Solution

The fourth proportional to 19,390.24, 29,077.80 and 8,302.24 is: 12,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.24 : 29,077.80 = 8,302.24 : x
  2. Step 2: Convert to fraction form
    19,390.24/29,077.80 = 8,302.24/x
  3. Step 3: Cross multiply
    19,390.24x = 29,077.80 × 8,302.24
  4. Step 4: Simplify right side
    19,390.24x = 241,410,874.27
  5. Step 5: Solve for x
    x = 241,410,874.27/19,390.24
  6. Step 6: Final answer
    x = 12,450.12

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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.