Home / 20,739.37-28,620.36-11,307.93

Finding the Fourth Proportional to 20,739.37, 28,620.36 and 11,307.93

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Solution

The fourth proportional to 20,739.37, 28,620.36 and 11,307.93 is: 15,604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.37 : 28,620.36 = 11,307.93 : x
  2. Step 2: Convert to fraction form
    20,739.37/28,620.36 = 11,307.93/x
  3. Step 3: Cross multiply
    20,739.37x = 28,620.36 × 11,307.93
  4. Step 4: Simplify right side
    20,739.37x = 323,637,027.45
  5. Step 5: Solve for x
    x = 323,637,027.45/20,739.37
  6. Step 6: Final answer
    x = 15,604.96

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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.