Home / 11,695.84-16,140.49-6,390.99

Finding the Fourth Proportional to 11,695.84, 16,140.49 and 6,390.99

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Solution

The fourth proportional to 11,695.84, 16,140.49 and 6,390.99 is: 8,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.84 : 16,140.49 = 6,390.99 : x
  2. Step 2: Convert to fraction form
    11,695.84/16,140.49 = 6,390.99/x
  3. Step 3: Cross multiply
    11,695.84x = 16,140.49 × 6,390.99
  4. Step 4: Simplify right side
    11,695.84x = 103,153,694.21
  5. Step 5: Solve for x
    x = 103,153,694.21/11,695.84
  6. Step 6: Final answer
    x = 8,819.69

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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.