Home / 20,426.08-30,778.06-16,809.44

Finding the Fourth Proportional to 20,426.08, 30,778.06 and 16,809.44

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Solution

The fourth proportional to 20,426.08, 30,778.06 and 16,809.44 is: 25,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.08 : 30,778.06 = 16,809.44 : x
  2. Step 2: Convert to fraction form
    20,426.08/30,778.06 = 16,809.44/x
  3. Step 3: Cross multiply
    20,426.08x = 30,778.06 × 16,809.44
  4. Step 4: Simplify right side
    20,426.08x = 517,361,952.89
  5. Step 5: Solve for x
    x = 517,361,952.89/20,426.08
  6. Step 6: Final answer
    x = 25,328.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.