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Finding the Fourth Proportional to 12,973.92, 17,879.04 and 9,431.52

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Solution

The fourth proportional to 12,973.92, 17,879.04 and 9,431.52 is: 12,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,973.92 : 17,879.04 = 9,431.52 : x
  2. Step 2: Convert to fraction form
    12,973.92/17,879.04 = 9,431.52/x
  3. Step 3: Cross multiply
    12,973.92x = 17,879.04 × 9,431.52
  4. Step 4: Simplify right side
    12,973.92x = 168,626,523.34
  5. Step 5: Solve for x
    x = 168,626,523.34/12,973.92
  6. Step 6: Final answer
    x = 12,997.35

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1.5x scale

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.