Home / 12,712.28-19,027.02-11,499.80

Finding the Fourth Proportional to 12,712.28, 19,027.02 and 11,499.80

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Solution

The fourth proportional to 12,712.28, 19,027.02 and 11,499.80 is: 17,212.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.28 : 19,027.02 = 11,499.80 : x
  2. Step 2: Convert to fraction form
    12,712.28/19,027.02 = 11,499.80/x
  3. Step 3: Cross multiply
    12,712.28x = 19,027.02 × 11,499.80
  4. Step 4: Simplify right side
    12,712.28x = 218,806,924.60
  5. Step 5: Solve for x
    x = 218,806,924.60/12,712.28
  6. Step 6: Final answer
    x = 17,212.25

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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.