Home / 20,477.37-30,676.66-12,556.77

Finding the Fourth Proportional to 20,477.37, 30,676.66 and 12,556.77

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Solution

The fourth proportional to 20,477.37, 30,676.66 and 12,556.77 is: 18,810.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.37 : 30,676.66 = 12,556.77 : x
  2. Step 2: Convert to fraction form
    20,477.37/30,676.66 = 12,556.77/x
  3. Step 3: Cross multiply
    20,477.37x = 30,676.66 × 12,556.77
  4. Step 4: Simplify right side
    20,477.37x = 385,199,547.82
  5. Step 5: Solve for x
    x = 385,199,547.82/20,477.37
  6. Step 6: Final answer
    x = 18,810.99

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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.