Home / 19,664.70-27,135.63-11,165.10

Finding the Fourth Proportional to 19,664.70, 27,135.63 and 11,165.10

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Solution

The fourth proportional to 19,664.70, 27,135.63 and 11,165.10 is: 15,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.70 : 27,135.63 = 11,165.10 : x
  2. Step 2: Convert to fraction form
    19,664.70/27,135.63 = 11,165.10/x
  3. Step 3: Cross multiply
    19,664.70x = 27,135.63 × 11,165.10
  4. Step 4: Simplify right side
    19,664.70x = 302,972,022.51
  5. Step 5: Solve for x
    x = 302,972,022.51/19,664.70
  6. Step 6: Final answer
    x = 15,406.90

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1.5x scale

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.