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Finding the Fourth Proportional to 12,630.52, 17,430.20 and 6,965.48

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Solution

The fourth proportional to 12,630.52, 17,430.20 and 6,965.48 is: 9,612.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.52 : 17,430.20 = 6,965.48 : x
  2. Step 2: Convert to fraction form
    12,630.52/17,430.20 = 6,965.48/x
  3. Step 3: Cross multiply
    12,630.52x = 17,430.20 × 6,965.48
  4. Step 4: Simplify right side
    12,630.52x = 121,409,709.50
  5. Step 5: Solve for x
    x = 121,409,709.50/12,630.52
  6. Step 6: Final answer
    x = 9,612.41

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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.