Home / 10,935.40-16,412.70-9,380.20

Finding the Fourth Proportional to 10,935.40, 16,412.70 and 9,380.20

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Solution

The fourth proportional to 10,935.40, 16,412.70 and 9,380.20 is: 14,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,935.40 : 16,412.70 = 9,380.20 : x
  2. Step 2: Convert to fraction form
    10,935.40/16,412.70 = 9,380.20/x
  3. Step 3: Cross multiply
    10,935.40x = 16,412.70 × 9,380.20
  4. Step 4: Simplify right side
    10,935.40x = 153,954,408.54
  5. Step 5: Solve for x
    x = 153,954,408.54/10,935.40
  6. Step 6: Final answer
    x = 14,078.53

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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.