Home / 11,733.20-16,191.87-6,428

Finding the Fourth Proportional to 11,733.20, 16,191.87 and 6,428

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Solution

The fourth proportional to 11,733.20, 16,191.87 and 6,428 is: 8,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,733.20 : 16,191.87 = 6,428 : x
  2. Step 2: Convert to fraction form
    11,733.20/16,191.87 = 6,428/x
  3. Step 3: Cross multiply
    11,733.20x = 16,191.87 × 6,428
  4. Step 4: Simplify right side
    11,733.20x = 104,081,340.36
  5. Step 5: Solve for x
    x = 104,081,340.36/11,733.20
  6. Step 6: Final answer
    x = 8,870.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.