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Finding the Fourth Proportional to 19,681.70, 29,522.55 and 8,003.30

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Solution

The fourth proportional to 19,681.70, 29,522.55 and 8,003.30 is: 12,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.70 : 29,522.55 = 8,003.30 : x
  2. Step 2: Convert to fraction form
    19,681.70/29,522.55 = 8,003.30/x
  3. Step 3: Cross multiply
    19,681.70x = 29,522.55 × 8,003.30
  4. Step 4: Simplify right side
    19,681.70x = 236,277,824.42
  5. Step 5: Solve for x
    x = 236,277,824.42/19,681.70
  6. Step 6: Final answer
    x = 12,004.95

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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.