Home / 19,129.08-26,389.26-11,171.64

Finding the Fourth Proportional to 19,129.08, 26,389.26 and 11,171.64

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Solution

The fourth proportional to 19,129.08, 26,389.26 and 11,171.64 is: 15,411.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.08 : 26,389.26 = 11,171.64 : x
  2. Step 2: Convert to fraction form
    19,129.08/26,389.26 = 11,171.64/x
  3. Step 3: Cross multiply
    19,129.08x = 26,389.26 × 11,171.64
  4. Step 4: Simplify right side
    19,129.08x = 294,811,312.59
  5. Step 5: Solve for x
    x = 294,811,312.59/19,129.08
  6. Step 6: Final answer
    x = 15,411.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.