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Finding the Fourth Proportional to 12,999.30, 19,505.70 and 6,073.80

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Solution

The fourth proportional to 12,999.30, 19,505.70 and 6,073.80 is: 9,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.30 : 19,505.70 = 6,073.80 : x
  2. Step 2: Convert to fraction form
    12,999.30/19,505.70 = 6,073.80/x
  3. Step 3: Cross multiply
    12,999.30x = 19,505.70 × 6,073.80
  4. Step 4: Simplify right side
    12,999.30x = 118,473,720.66
  5. Step 5: Solve for x
    x = 118,473,720.66/12,999.30
  6. Step 6: Final answer
    x = 9,113.85

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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.