Home / 19,157.79-28,665.90-11,634.51

Finding the Fourth Proportional to 19,157.79, 28,665.90 and 11,634.51

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Solution

The fourth proportional to 19,157.79, 28,665.90 and 11,634.51 is: 17,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.79 : 28,665.90 = 11,634.51 : x
  2. Step 2: Convert to fraction form
    19,157.79/28,665.90 = 11,634.51/x
  3. Step 3: Cross multiply
    19,157.79x = 28,665.90 × 11,634.51
  4. Step 4: Simplify right side
    19,157.79x = 333,513,700.21
  5. Step 5: Solve for x
    x = 333,513,700.21/19,157.79
  6. Step 6: Final answer
    x = 17,408.78

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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.