Home / 21,975.11-30,325.73-11,903.52

Finding the Fourth Proportional to 21,975.11, 30,325.73 and 11,903.52

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Solution

The fourth proportional to 21,975.11, 30,325.73 and 11,903.52 is: 16,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.11 : 30,325.73 = 11,903.52 : x
  2. Step 2: Convert to fraction form
    21,975.11/30,325.73 = 11,903.52/x
  3. Step 3: Cross multiply
    21,975.11x = 30,325.73 × 11,903.52
  4. Step 4: Simplify right side
    21,975.11x = 360,982,933.57
  5. Step 5: Solve for x
    x = 360,982,933.57/21,975.11
  6. Step 6: Final answer
    x = 16,426.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.