Home / 11,695.01-16,140.21-6,390.62

Finding the Fourth Proportional to 11,695.01, 16,140.21 and 6,390.62

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Solution

The fourth proportional to 11,695.01, 16,140.21 and 6,390.62 is: 8,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.01 : 16,140.21 = 6,390.62 : x
  2. Step 2: Convert to fraction form
    11,695.01/16,140.21 = 6,390.62/x
  3. Step 3: Cross multiply
    11,695.01x = 16,140.21 × 6,390.62
  4. Step 4: Simplify right side
    11,695.01x = 103,145,868.13
  5. Step 5: Solve for x
    x = 103,145,868.13/11,695.01
  6. Step 6: Final answer
    x = 8,819.65

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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.