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Finding the Fourth Proportional to 19,322.30, 28,985.89 and 6,839.39

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Solution

The fourth proportional to 19,322.30, 28,985.89 and 6,839.39 is: 10,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,322.30 : 28,985.89 = 6,839.39 : x
  2. Step 2: Convert to fraction form
    19,322.30/28,985.89 = 6,839.39/x
  3. Step 3: Cross multiply
    19,322.30x = 28,985.89 × 6,839.39
  4. Step 4: Simplify right side
    19,322.30x = 198,245,806.21
  5. Step 5: Solve for x
    x = 198,245,806.21/19,322.30
  6. Step 6: Final answer
    x = 10,259.95

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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.