Home / 20,989.63-31,387.24-16,255.99

Finding the Fourth Proportional to 20,989.63, 31,387.24 and 16,255.99

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Solution

The fourth proportional to 20,989.63, 31,387.24 and 16,255.99 is: 24,308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.63 : 31,387.24 = 16,255.99 : x
  2. Step 2: Convert to fraction form
    20,989.63/31,387.24 = 16,255.99/x
  3. Step 3: Cross multiply
    20,989.63x = 31,387.24 × 16,255.99
  4. Step 4: Simplify right side
    20,989.63x = 510,230,659.57
  5. Step 5: Solve for x
    x = 510,230,659.57/20,989.63
  6. Step 6: Final answer
    x = 24,308.70

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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.