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Finding the Fourth Proportional to 12,630.57, 17,430.32 and 6,965.55

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Solution

The fourth proportional to 12,630.57, 17,430.32 and 6,965.55 is: 9,612.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.57 : 17,430.32 = 6,965.55 : x
  2. Step 2: Convert to fraction form
    12,630.57/17,430.32 = 6,965.55/x
  3. Step 3: Cross multiply
    12,630.57x = 17,430.32 × 6,965.55
  4. Step 4: Simplify right side
    12,630.57x = 121,411,765.48
  5. Step 5: Solve for x
    x = 121,411,765.48/12,630.57
  6. Step 6: Final answer
    x = 9,612.53

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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.