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Finding the Fourth Proportional to 12,630.84, 17,430.78 and 6,966.24

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Solution

The fourth proportional to 12,630.84, 17,430.78 and 6,966.24 is: 9,613.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.84 : 17,430.78 = 6,966.24 : x
  2. Step 2: Convert to fraction form
    12,630.84/17,430.78 = 6,966.24/x
  3. Step 3: Cross multiply
    12,630.84x = 17,430.78 × 6,966.24
  4. Step 4: Simplify right side
    12,630.84x = 121,426,996.87
  5. Step 5: Solve for x
    x = 121,426,996.87/12,630.84
  6. Step 6: Final answer
    x = 9,613.53

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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.