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Finding the Fourth Proportional to 19,458.29, 29,187.45 and 6,979.10

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Solution

The fourth proportional to 19,458.29, 29,187.45 and 6,979.10 is: 10,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,458.29 : 29,187.45 = 6,979.10 : x
  2. Step 2: Convert to fraction form
    19,458.29/29,187.45 = 6,979.10/x
  3. Step 3: Cross multiply
    19,458.29x = 29,187.45 × 6,979.10
  4. Step 4: Simplify right side
    19,458.29x = 203,701,986.36
  5. Step 5: Solve for x
    x = 203,701,986.36/19,458.29
  6. Step 6: Final answer
    x = 10,468.65

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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.