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Finding the Fourth Proportional to 21,811.41, 32,718.33 and 7,019.19

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Solution

The fourth proportional to 21,811.41, 32,718.33 and 7,019.19 is: 10,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.41 : 32,718.33 = 7,019.19 : x
  2. Step 2: Convert to fraction form
    21,811.41/32,718.33 = 7,019.19/x
  3. Step 3: Cross multiply
    21,811.41x = 32,718.33 × 7,019.19
  4. Step 4: Simplify right side
    21,811.41x = 229,656,174.75
  5. Step 5: Solve for x
    x = 229,656,174.75/21,811.41
  6. Step 6: Final answer
    x = 10,529.18

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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.