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Finding the Fourth Proportional to 10,887.94, 16,320.88 and 7,378.30

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Solution

The fourth proportional to 10,887.94, 16,320.88 and 7,378.30 is: 11,059.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.94 : 16,320.88 = 7,378.30 : x
  2. Step 2: Convert to fraction form
    10,887.94/16,320.88 = 7,378.30/x
  3. Step 3: Cross multiply
    10,887.94x = 16,320.88 × 7,378.30
  4. Step 4: Simplify right side
    10,887.94x = 120,420,389.71
  5. Step 5: Solve for x
    x = 120,420,389.71/10,887.94
  6. Step 6: Final answer
    x = 11,059.98

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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.