Home / 21,813.91-30,104.46-16,426.70

Finding the Fourth Proportional to 21,813.91, 30,104.46 and 16,426.70

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Solution

The fourth proportional to 21,813.91, 30,104.46 and 16,426.70 is: 22,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.91 : 30,104.46 = 16,426.70 : x
  2. Step 2: Convert to fraction form
    21,813.91/30,104.46 = 16,426.70/x
  3. Step 3: Cross multiply
    21,813.91x = 30,104.46 × 16,426.70
  4. Step 4: Simplify right side
    21,813.91x = 494,516,933.08
  5. Step 5: Solve for x
    x = 494,516,933.08/21,813.91
  6. Step 6: Final answer
    x = 22,669.80

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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.