Home / 21,898.24-30,219.56-11,826.68

Finding the Fourth Proportional to 21,898.24, 30,219.56 and 11,826.68

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Solution

The fourth proportional to 21,898.24, 30,219.56 and 11,826.68 is: 16,320.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.24 : 30,219.56 = 11,826.68 : x
  2. Step 2: Convert to fraction form
    21,898.24/30,219.56 = 11,826.68/x
  3. Step 3: Cross multiply
    21,898.24x = 30,219.56 × 11,826.68
  4. Step 4: Simplify right side
    21,898.24x = 357,397,065.86
  5. Step 5: Solve for x
    x = 357,397,065.86/21,898.24
  6. Step 6: Final answer
    x = 16,320.81

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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.