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Finding the Fourth Proportional to 10,803.89, 16,207.86 and 7,440.87

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Solution

The fourth proportional to 10,803.89, 16,207.86 and 7,440.87 is: 11,162.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,803.89 : 16,207.86 = 7,440.87 : x
  2. Step 2: Convert to fraction form
    10,803.89/16,207.86 = 7,440.87/x
  3. Step 3: Cross multiply
    10,803.89x = 16,207.86 × 7,440.87
  4. Step 4: Simplify right side
    10,803.89x = 120,600,579.24
  5. Step 5: Solve for x
    x = 120,600,579.24/10,803.89
  6. Step 6: Final answer
    x = 11,162.70

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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.