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Finding the Fourth Proportional to 17,809.71, 26,731.73 and 13,116.54

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Solution

The fourth proportional to 17,809.71, 26,731.73 and 13,116.54 is: 19,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,809.71 : 26,731.73 = 13,116.54 : x
  2. Step 2: Convert to fraction form
    17,809.71/26,731.73 = 13,116.54/x
  3. Step 3: Cross multiply
    17,809.71x = 26,731.73 × 13,116.54
  4. Step 4: Simplify right side
    17,809.71x = 350,627,805.81
  5. Step 5: Solve for x
    x = 350,627,805.81/17,809.71
  6. Step 6: Final answer
    x = 19,687.45

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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.