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Finding the Fourth Proportional to 9,968.40, 14,936.40 and 9,385.20

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Solution

The fourth proportional to 9,968.40, 14,936.40 and 9,385.20 is: 14,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,968.40 : 14,936.40 = 9,385.20 : x
  2. Step 2: Convert to fraction form
    9,968.40/14,936.40 = 9,385.20/x
  3. Step 3: Cross multiply
    9,968.40x = 14,936.40 × 9,385.20
  4. Step 4: Simplify right side
    9,968.40x = 140,181,101.28
  5. Step 5: Solve for x
    x = 140,181,101.28/9,968.40
  6. Step 6: Final answer
    x = 14,062.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.