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Finding the Fourth Proportional to 10,928.71, 16,401.64 and 7,620.26

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Solution

The fourth proportional to 10,928.71, 16,401.64 and 7,620.26 is: 11,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.71 : 16,401.64 = 7,620.26 : x
  2. Step 2: Convert to fraction form
    10,928.71/16,401.64 = 7,620.26/x
  3. Step 3: Cross multiply
    10,928.71x = 16,401.64 × 7,620.26
  4. Step 4: Simplify right side
    10,928.71x = 124,984,783.18
  5. Step 5: Solve for x
    x = 124,984,783.18/10,928.71
  6. Step 6: Final answer
    x = 11,436.37

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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.