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Finding the Fourth Proportional to 12,995.30, 19,499.70 and 6,069.80

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Solution

The fourth proportional to 12,995.30, 19,499.70 and 6,069.80 is: 9,107.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.30 : 19,499.70 = 6,069.80 : x
  2. Step 2: Convert to fraction form
    12,995.30/19,499.70 = 6,069.80/x
  3. Step 3: Cross multiply
    12,995.30x = 19,499.70 × 6,069.80
  4. Step 4: Simplify right side
    12,995.30x = 118,359,279.06
  5. Step 5: Solve for x
    x = 118,359,279.06/12,995.30
  6. Step 6: Final answer
    x = 9,107.85

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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.