Home / 12,693.20-19,037.70-4,259.60

Finding the Fourth Proportional to 12,693.20, 19,037.70 and 4,259.60

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Solution

The fourth proportional to 12,693.20, 19,037.70 and 4,259.60 is: 6,388.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.20 : 19,037.70 = 4,259.60 : x
  2. Step 2: Convert to fraction form
    12,693.20/19,037.70 = 4,259.60/x
  3. Step 3: Cross multiply
    12,693.20x = 19,037.70 × 4,259.60
  4. Step 4: Simplify right side
    12,693.20x = 81,092,986.92
  5. Step 5: Solve for x
    x = 81,092,986.92/12,693.20
  6. Step 6: Final answer
    x = 6,388.70

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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.