Home / 21,958.30-30,298.20-13,007.53

Finding the Fourth Proportional to 21,958.30, 30,298.20 and 13,007.53

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Solution

The fourth proportional to 21,958.30, 30,298.20 and 13,007.53 is: 17,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,958.30 : 30,298.20 = 13,007.53 : x
  2. Step 2: Convert to fraction form
    21,958.30/30,298.20 = 13,007.53/x
  3. Step 3: Cross multiply
    21,958.30x = 30,298.20 × 13,007.53
  4. Step 4: Simplify right side
    21,958.30x = 394,104,745.45
  5. Step 5: Solve for x
    x = 394,104,745.45/21,958.30
  6. Step 6: Final answer
    x = 17,947.87

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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.