Home / 10,935.76-16,403.44-3,145.20

Finding the Fourth Proportional to 10,935.76, 16,403.44 and 3,145.20

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Solution

The fourth proportional to 10,935.76, 16,403.44 and 3,145.20 is: 4,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,935.76 : 16,403.44 = 3,145.20 : x
  2. Step 2: Convert to fraction form
    10,935.76/16,403.44 = 3,145.20/x
  3. Step 3: Cross multiply
    10,935.76x = 16,403.44 × 3,145.20
  4. Step 4: Simplify right side
    10,935.76x = 51,592,099.49
  5. Step 5: Solve for x
    x = 51,592,099.49/10,935.76
  6. Step 6: Final answer
    x = 4,717.74

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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.