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Finding the Fourth Proportional to 19,791.56, 29,512.72 and 19,613.76

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Solution

The fourth proportional to 19,791.56, 29,512.72 and 19,613.76 is: 29,247.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.56 : 29,512.72 = 19,613.76 : x
  2. Step 2: Convert to fraction form
    19,791.56/29,512.72 = 19,613.76/x
  3. Step 3: Cross multiply
    19,791.56x = 29,512.72 × 19,613.76
  4. Step 4: Simplify right side
    19,791.56x = 578,855,407.03
  5. Step 5: Solve for x
    x = 578,855,407.03/19,791.56
  6. Step 6: Final answer
    x = 29,247.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.