Home / 20,645.56-28,495.02-12,260.44

Finding the Fourth Proportional to 20,645.56, 28,495.02 and 12,260.44

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Solution

The fourth proportional to 20,645.56, 28,495.02 and 12,260.44 is: 16,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.56 : 28,495.02 = 12,260.44 : x
  2. Step 2: Convert to fraction form
    20,645.56/28,495.02 = 12,260.44/x
  3. Step 3: Cross multiply
    20,645.56x = 28,495.02 × 12,260.44
  4. Step 4: Simplify right side
    20,645.56x = 349,361,483.01
  5. Step 5: Solve for x
    x = 349,361,483.01/20,645.56
  6. Step 6: Final answer
    x = 16,921.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.