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Finding the Fourth Proportional to 21,993.40, 32,991.03 and 6,411.04

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Solution

The fourth proportional to 21,993.40, 32,991.03 and 6,411.04 is: 9,616.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.40 : 32,991.03 = 6,411.04 : x
  2. Step 2: Convert to fraction form
    21,993.40/32,991.03 = 6,411.04/x
  3. Step 3: Cross multiply
    21,993.40x = 32,991.03 × 6,411.04
  4. Step 4: Simplify right side
    21,993.40x = 211,506,812.97
  5. Step 5: Solve for x
    x = 211,506,812.97/21,993.40
  6. Step 6: Final answer
    x = 9,616.83

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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.