Home / 19,688.72-27,169.84-11,191.77

Finding the Fourth Proportional to 19,688.72, 27,169.84 and 11,191.77

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Solution

The fourth proportional to 19,688.72, 27,169.84 and 11,191.77 is: 15,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.72 : 27,169.84 = 11,191.77 : x
  2. Step 2: Convert to fraction form
    19,688.72/27,169.84 = 11,191.77/x
  3. Step 3: Cross multiply
    19,688.72x = 27,169.84 × 11,191.77
  4. Step 4: Simplify right side
    19,688.72x = 304,078,640.16
  5. Step 5: Solve for x
    x = 304,078,640.16/19,688.72
  6. Step 6: Final answer
    x = 15,444.31

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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.