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Finding the Fourth Proportional to 12,323.88, 16,986.98 and 9,630.40

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Solution

The fourth proportional to 12,323.88, 16,986.98 and 9,630.40 is: 13,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,323.88 : 16,986.98 = 9,630.40 : x
  2. Step 2: Convert to fraction form
    12,323.88/16,986.98 = 9,630.40/x
  3. Step 3: Cross multiply
    12,323.88x = 16,986.98 × 9,630.40
  4. Step 4: Simplify right side
    12,323.88x = 163,591,412.19
  5. Step 5: Solve for x
    x = 163,591,412.19/12,323.88
  6. Step 6: Final answer
    x = 13,274.34

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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.