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Finding the Fourth Proportional to 9,918.60, 14,910.30 and 9,335.40

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Solution

The fourth proportional to 9,918.60, 14,910.30 and 9,335.40 is: 14,033.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.60 : 14,910.30 = 9,335.40 : x
  2. Step 2: Convert to fraction form
    9,918.60/14,910.30 = 9,335.40/x
  3. Step 3: Cross multiply
    9,918.60x = 14,910.30 × 9,335.40
  4. Step 4: Simplify right side
    9,918.60x = 139,193,614.62
  5. Step 5: Solve for x
    x = 139,193,614.62/9,918.60
  6. Step 6: Final answer
    x = 14,033.59

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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.