Home / 20,851.48-31,216.74-16,220.44

Finding the Fourth Proportional to 20,851.48, 31,216.74 and 16,220.44

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Solution

The fourth proportional to 20,851.48, 31,216.74 and 16,220.44 is: 24,283.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.48 : 31,216.74 = 16,220.44 : x
  2. Step 2: Convert to fraction form
    20,851.48/31,216.74 = 16,220.44/x
  3. Step 3: Cross multiply
    20,851.48x = 31,216.74 × 16,220.44
  4. Step 4: Simplify right side
    20,851.48x = 506,349,258.17
  5. Step 5: Solve for x
    x = 506,349,258.17/20,851.48
  6. Step 6: Final answer
    x = 24,283.61

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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.