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Finding the Fourth Proportional to 26,906, 37,130.32 and 15,130

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Solution

The fourth proportional to 26,906, 37,130.32 and 15,130 is: 20,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,906 : 37,130.32 = 15,130 : x
  2. Step 2: Convert to fraction form
    26,906/37,130.32 = 15,130/x
  3. Step 3: Cross multiply
    26,906x = 37,130.32 × 15,130
  4. Step 4: Simplify right side
    26,906x = 561,781,741.60
  5. Step 5: Solve for x
    x = 561,781,741.60/26,906
  6. Step 6: Final answer
    x = 20,879.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.