Home / 19,688.70-27,171.08-11,191.18

Finding the Fourth Proportional to 19,688.70, 27,171.08 and 11,191.18

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Solution

The fourth proportional to 19,688.70, 27,171.08 and 11,191.18 is: 15,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.70 : 27,171.08 = 11,191.18 : x
  2. Step 2: Convert to fraction form
    19,688.70/27,171.08 = 11,191.18/x
  3. Step 3: Cross multiply
    19,688.70x = 27,171.08 × 11,191.18
  4. Step 4: Simplify right side
    19,688.70x = 304,076,348.69
  5. Step 5: Solve for x
    x = 304,076,348.69/19,688.70
  6. Step 6: Final answer
    x = 15,444.21

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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.