Home / 20,771.09-31,156.63-16,455.41

Finding the Fourth Proportional to 20,771.09, 31,156.63 and 16,455.41

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Solution

The fourth proportional to 20,771.09, 31,156.63 and 16,455.41 is: 24,683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.09 : 31,156.63 = 16,455.41 : x
  2. Step 2: Convert to fraction form
    20,771.09/31,156.63 = 16,455.41/x
  3. Step 3: Cross multiply
    20,771.09x = 31,156.63 × 16,455.41
  4. Step 4: Simplify right side
    20,771.09x = 512,695,044.07
  5. Step 5: Solve for x
    x = 512,695,044.07/20,771.09
  6. Step 6: Final answer
    x = 24,683.11

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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.