Home / 13,920.58-20,858.96-10,765.74

Finding the Fourth Proportional to 13,920.58, 20,858.96 and 10,765.74

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Solution

The fourth proportional to 13,920.58, 20,858.96 and 10,765.74 is: 16,131.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.58 : 20,858.96 = 10,765.74 : x
  2. Step 2: Convert to fraction form
    13,920.58/20,858.96 = 10,765.74/x
  3. Step 3: Cross multiply
    13,920.58x = 20,858.96 × 10,765.74
  4. Step 4: Simplify right side
    13,920.58x = 224,562,035.74
  5. Step 5: Solve for x
    x = 224,562,035.74/13,920.58
  6. Step 6: Final answer
    x = 16,131.66

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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.