Home / 19,438.79-29,187.34-11,128.19

Finding the Fourth Proportional to 19,438.79, 29,187.34 and 11,128.19

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Solution

The fourth proportional to 19,438.79, 29,187.34 and 11,128.19 is: 16,708.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.79 : 29,187.34 = 11,128.19 : x
  2. Step 2: Convert to fraction form
    19,438.79/29,187.34 = 11,128.19/x
  3. Step 3: Cross multiply
    19,438.79x = 29,187.34 × 11,128.19
  4. Step 4: Simplify right side
    19,438.79x = 324,802,091.36
  5. Step 5: Solve for x
    x = 324,802,091.36/19,438.79
  6. Step 6: Final answer
    x = 16,708.97

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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.