Home / 12,997.20-19,508.60-6,430.80

Finding the Fourth Proportional to 12,997.20, 19,508.60 and 6,430.80

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Solution

The fourth proportional to 12,997.20, 19,508.60 and 6,430.80 is: 9,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.20 : 19,508.60 = 6,430.80 : x
  2. Step 2: Convert to fraction form
    12,997.20/19,508.60 = 6,430.80/x
  3. Step 3: Cross multiply
    12,997.20x = 19,508.60 × 6,430.80
  4. Step 4: Simplify right side
    12,997.20x = 125,455,904.88
  5. Step 5: Solve for x
    x = 125,455,904.88/12,997.20
  6. Step 6: Final answer
    x = 9,652.53

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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.