Home / 20,887.03-28,664.28-20,739.41

Finding the Fourth Proportional to 20,887.03, 28,664.28 and 20,739.41

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Solution

The fourth proportional to 20,887.03, 28,664.28 and 20,739.41 is: 28,461.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.03 : 28,664.28 = 20,739.41 : x
  2. Step 2: Convert to fraction form
    20,887.03/28,664.28 = 20,739.41/x
  3. Step 3: Cross multiply
    20,887.03x = 28,664.28 × 20,739.41
  4. Step 4: Simplify right side
    20,887.03x = 594,480,255.27
  5. Step 5: Solve for x
    x = 594,480,255.27/20,887.03
  6. Step 6: Final answer
    x = 28,461.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.