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Finding the Fourth Proportional to 10,428.66, 15,636.08 and 5,750.94

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Solution

The fourth proportional to 10,428.66, 15,636.08 and 5,750.94 is: 8,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.66 : 15,636.08 = 5,750.94 : x
  2. Step 2: Convert to fraction form
    10,428.66/15,636.08 = 5,750.94/x
  3. Step 3: Cross multiply
    10,428.66x = 15,636.08 × 5,750.94
  4. Step 4: Simplify right side
    10,428.66x = 89,922,157.92
  5. Step 5: Solve for x
    x = 89,922,157.92/10,428.66
  6. Step 6: Final answer
    x = 8,622.60

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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.