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Finding the Fourth Proportional to 18,991.98, 26,193.99 and 17,718.75

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Solution

The fourth proportional to 18,991.98, 26,193.99 and 17,718.75 is: 24,437.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.98 : 26,193.99 = 17,718.75 : x
  2. Step 2: Convert to fraction form
    18,991.98/26,193.99 = 17,718.75/x
  3. Step 3: Cross multiply
    18,991.98x = 26,193.99 × 17,718.75
  4. Step 4: Simplify right side
    18,991.98x = 464,124,760.31
  5. Step 5: Solve for x
    x = 464,124,760.31/18,991.98
  6. Step 6: Final answer
    x = 24,437.93

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Double scale
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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.