Home / 21,991.42-32,986.95-7,946.14

Finding the Fourth Proportional to 21,991.42, 32,986.95 and 7,946.14

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Solution

The fourth proportional to 21,991.42, 32,986.95 and 7,946.14 is: 11,919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.42 : 32,986.95 = 7,946.14 : x
  2. Step 2: Convert to fraction form
    21,991.42/32,986.95 = 7,946.14/x
  3. Step 3: Cross multiply
    21,991.42x = 32,986.95 × 7,946.14
  4. Step 4: Simplify right side
    21,991.42x = 262,118,826.07
  5. Step 5: Solve for x
    x = 262,118,826.07/21,991.42
  6. Step 6: Final answer
    x = 11,919.14

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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.