Home / 20,739.40-31,083.18-16,339.48

Finding the Fourth Proportional to 20,739.40, 31,083.18 and 16,339.48

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Solution

The fourth proportional to 20,739.40, 31,083.18 and 16,339.48 is: 24,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.40 : 31,083.18 = 16,339.48 : x
  2. Step 2: Convert to fraction form
    20,739.40/31,083.18 = 16,339.48/x
  3. Step 3: Cross multiply
    20,739.40x = 31,083.18 × 16,339.48
  4. Step 4: Simplify right side
    20,739.40x = 507,882,997.95
  5. Step 5: Solve for x
    x = 507,882,997.95/20,739.40
  6. Step 6: Final answer
    x = 24,488.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.