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Finding the Fourth Proportional to 19,568.72, 29,354.04 and 7,880.36

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Solution

The fourth proportional to 19,568.72, 29,354.04 and 7,880.36 is: 11,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,568.72 : 29,354.04 = 7,880.36 : x
  2. Step 2: Convert to fraction form
    19,568.72/29,354.04 = 7,880.36/x
  3. Step 3: Cross multiply
    19,568.72x = 29,354.04 × 7,880.36
  4. Step 4: Simplify right side
    19,568.72x = 231,320,402.65
  5. Step 5: Solve for x
    x = 231,320,402.65/19,568.72
  6. Step 6: Final answer
    x = 11,820.93

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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.