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Finding the Fourth Proportional to 19,370.64, 29,061 and 5,520.72

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Solution

The fourth proportional to 19,370.64, 29,061 and 5,520.72 is: 8,282.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,370.64 : 29,061 = 5,520.72 : x
  2. Step 2: Convert to fraction form
    19,370.64/29,061 = 5,520.72/x
  3. Step 3: Cross multiply
    19,370.64x = 29,061 × 5,520.72
  4. Step 4: Simplify right side
    19,370.64x = 160,437,643.92
  5. Step 5: Solve for x
    x = 160,437,643.92/19,370.64
  6. Step 6: Final answer
    x = 8,282.52

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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.