Home / 13,789.89-20,688.77-6,771.93

Finding the Fourth Proportional to 13,789.89, 20,688.77 and 6,771.93

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Solution

The fourth proportional to 13,789.89, 20,688.77 and 6,771.93 is: 10,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.89 : 20,688.77 = 6,771.93 : x
  2. Step 2: Convert to fraction form
    13,789.89/20,688.77 = 6,771.93/x
  3. Step 3: Cross multiply
    13,789.89x = 20,688.77 × 6,771.93
  4. Step 4: Simplify right side
    13,789.89x = 140,102,868.37
  5. Step 5: Solve for x
    x = 140,102,868.37/13,789.89
  6. Step 6: Final answer
    x = 10,159.82

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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.