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Finding the Fourth Proportional to 19,691.16, 29,536.74 and 8,001.64

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Solution

The fourth proportional to 19,691.16, 29,536.74 and 8,001.64 is: 12,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.16 : 29,536.74 = 8,001.64 : x
  2. Step 2: Convert to fraction form
    19,691.16/29,536.74 = 8,001.64/x
  3. Step 3: Cross multiply
    19,691.16x = 29,536.74 × 8,001.64
  4. Step 4: Simplify right side
    19,691.16x = 236,342,360.25
  5. Step 5: Solve for x
    x = 236,342,360.25/19,691.16
  6. Step 6: Final answer
    x = 12,002.46

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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.