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Finding the Fourth Proportional to 19,659.87, 29,489.85 and 6,508.71

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Solution

The fourth proportional to 19,659.87, 29,489.85 and 6,508.71 is: 9,763.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.87 : 29,489.85 = 6,508.71 : x
  2. Step 2: Convert to fraction form
    19,659.87/29,489.85 = 6,508.71/x
  3. Step 3: Cross multiply
    19,659.87x = 29,489.85 × 6,508.71
  4. Step 4: Simplify right side
    19,659.87x = 191,940,881.59
  5. Step 5: Solve for x
    x = 191,940,881.59/19,659.87
  6. Step 6: Final answer
    x = 9,763.08

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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.