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Finding the Fourth Proportional to 12,630.50, 17,430.18 and 6,965.46

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Solution

The fourth proportional to 12,630.50, 17,430.18 and 6,965.46 is: 9,612.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.50 : 17,430.18 = 6,965.46 : x
  2. Step 2: Convert to fraction form
    12,630.50/17,430.18 = 6,965.46/x
  3. Step 3: Cross multiply
    12,630.50x = 17,430.18 × 6,965.46
  4. Step 4: Simplify right side
    12,630.50x = 121,409,221.58
  5. Step 5: Solve for x
    x = 121,409,221.58/12,630.50
  6. Step 6: Final answer
    x = 9,612.38

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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.