Home / 19,388.16-26,756.64-11,007.36

Finding the Fourth Proportional to 19,388.16, 26,756.64 and 11,007.36

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Solution

The fourth proportional to 19,388.16, 26,756.64 and 11,007.36 is: 15,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.16 : 26,756.64 = 11,007.36 : x
  2. Step 2: Convert to fraction form
    19,388.16/26,756.64 = 11,007.36/x
  3. Step 3: Cross multiply
    19,388.16x = 26,756.64 × 11,007.36
  4. Step 4: Simplify right side
    19,388.16x = 294,519,968.87
  5. Step 5: Solve for x
    x = 294,519,968.87/19,388.16
  6. Step 6: Final answer
    x = 15,190.71

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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.