Home / 12,699.28-19,007.52-11,486.80

Finding the Fourth Proportional to 12,699.28, 19,007.52 and 11,486.80

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Solution

The fourth proportional to 12,699.28, 19,007.52 and 11,486.80 is: 17,192.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.28 : 19,007.52 = 11,486.80 : x
  2. Step 2: Convert to fraction form
    12,699.28/19,007.52 = 11,486.80/x
  3. Step 3: Cross multiply
    12,699.28x = 19,007.52 × 11,486.80
  4. Step 4: Simplify right side
    12,699.28x = 218,335,580.74
  5. Step 5: Solve for x
    x = 218,335,580.74/12,699.28
  6. Step 6: Final answer
    x = 17,192.75

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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.