Home / 19,769.06-27,284.55-11,390.42

Finding the Fourth Proportional to 19,769.06, 27,284.55 and 11,390.42

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Solution

The fourth proportional to 19,769.06, 27,284.55 and 11,390.42 is: 15,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,769.06 : 27,284.55 = 11,390.42 : x
  2. Step 2: Convert to fraction form
    19,769.06/27,284.55 = 11,390.42/x
  3. Step 3: Cross multiply
    19,769.06x = 27,284.55 × 11,390.42
  4. Step 4: Simplify right side
    19,769.06x = 310,782,509.51
  5. Step 5: Solve for x
    x = 310,782,509.51/19,769.06
  6. Step 6: Final answer
    x = 15,720.65

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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.