Home / 20,927.37-28,879.65-11,367.15

Finding the Fourth Proportional to 20,927.37, 28,879.65 and 11,367.15

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Solution

The fourth proportional to 20,927.37, 28,879.65 and 11,367.15 is: 15,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.37 : 28,879.65 = 11,367.15 : x
  2. Step 2: Convert to fraction form
    20,927.37/28,879.65 = 11,367.15/x
  3. Step 3: Cross multiply
    20,927.37x = 28,879.65 × 11,367.15
  4. Step 4: Simplify right side
    20,927.37x = 328,279,313.50
  5. Step 5: Solve for x
    x = 328,279,313.50/20,927.37
  6. Step 6: Final answer
    x = 15,686.60

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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.