Home / 12,681.74-19,022.63-11,911.05

Finding the Fourth Proportional to 12,681.74, 19,022.63 and 11,911.05

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Solution

The fourth proportional to 12,681.74, 19,022.63 and 11,911.05 is: 17,866.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.74 : 19,022.63 = 11,911.05 : x
  2. Step 2: Convert to fraction form
    12,681.74/19,022.63 = 11,911.05/x
  3. Step 3: Cross multiply
    12,681.74x = 19,022.63 × 11,911.05
  4. Step 4: Simplify right side
    12,681.74x = 226,579,437.51
  5. Step 5: Solve for x
    x = 226,579,437.51/12,681.74
  6. Step 6: Final answer
    x = 17,866.59

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Similar ratio
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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.