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Finding the Fourth Proportional to 19,458.96, 29,128.08 and 15,730.08

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Solution

The fourth proportional to 19,458.96, 29,128.08 and 15,730.08 is: 23,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,458.96 : 29,128.08 = 15,730.08 : x
  2. Step 2: Convert to fraction form
    19,458.96/29,128.08 = 15,730.08/x
  3. Step 3: Cross multiply
    19,458.96x = 29,128.08 × 15,730.08
  4. Step 4: Simplify right side
    19,458.96x = 458,187,028.65
  5. Step 5: Solve for x
    x = 458,187,028.65/19,458.96
  6. Step 6: Final answer
    x = 23,546.33

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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.