Home / 21,990.34-32,986.62-6,409.18

Finding the Fourth Proportional to 21,990.34, 32,986.62 and 6,409.18

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Solution

The fourth proportional to 21,990.34, 32,986.62 and 6,409.18 is: 9,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.34 : 32,986.62 = 6,409.18 : x
  2. Step 2: Convert to fraction form
    21,990.34/32,986.62 = 6,409.18/x
  3. Step 3: Cross multiply
    21,990.34x = 32,986.62 × 6,409.18
  4. Step 4: Simplify right side
    21,990.34x = 211,417,185.17
  5. Step 5: Solve for x
    x = 211,417,185.17/21,990.34
  6. Step 6: Final answer
    x = 9,614.09

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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.