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Finding the Fourth Proportional to 19,399.30, 29,098.95 and 6,918.82

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Solution

The fourth proportional to 19,399.30, 29,098.95 and 6,918.82 is: 10,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,399.30 : 29,098.95 = 6,918.82 : x
  2. Step 2: Convert to fraction form
    19,399.30/29,098.95 = 6,918.82/x
  3. Step 3: Cross multiply
    19,399.30x = 29,098.95 × 6,918.82
  4. Step 4: Simplify right side
    19,399.30x = 201,330,298.55
  5. Step 5: Solve for x
    x = 201,330,298.55/19,399.30
  6. Step 6: Final answer
    x = 10,378.23

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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.