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Finding the Fourth Proportional to 12,630.47, 17,430.17 and 6,965.42

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Solution

The fourth proportional to 12,630.47, 17,430.17 and 6,965.42 is: 9,612.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.47 : 17,430.17 = 6,965.42 : x
  2. Step 2: Convert to fraction form
    12,630.47/17,430.17 = 6,965.42/x
  3. Step 3: Cross multiply
    12,630.47x = 17,430.17 × 6,965.42
  4. Step 4: Simplify right side
    12,630.47x = 121,408,332.74
  5. Step 5: Solve for x
    x = 121,408,332.74/12,630.47
  6. Step 6: Final answer
    x = 9,612.34

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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.