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Finding the Fourth Proportional to 17,687.19, 26,523.96 and 7,821.06

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Solution

The fourth proportional to 17,687.19, 26,523.96 and 7,821.06 is: 11,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,687.19 : 26,523.96 = 7,821.06 : x
  2. Step 2: Convert to fraction form
    17,687.19/26,523.96 = 7,821.06/x
  3. Step 3: Cross multiply
    17,687.19x = 26,523.96 × 7,821.06
  4. Step 4: Simplify right side
    17,687.19x = 207,445,482.60
  5. Step 5: Solve for x
    x = 207,445,482.60/17,687.19
  6. Step 6: Final answer
    x = 11,728.57

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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.