Home / 13,857.85-20,789.81-4,498.81

Finding the Fourth Proportional to 13,857.85, 20,789.81 and 4,498.81

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Solution

The fourth proportional to 13,857.85, 20,789.81 and 4,498.81 is: 6,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.85 : 20,789.81 = 4,498.81 : x
  2. Step 2: Convert to fraction form
    13,857.85/20,789.81 = 4,498.81/x
  3. Step 3: Cross multiply
    13,857.85x = 20,789.81 × 4,498.81
  4. Step 4: Simplify right side
    13,857.85x = 93,529,347.53
  5. Step 5: Solve for x
    x = 93,529,347.53/13,857.85
  6. Step 6: Final answer
    x = 6,749.20

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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.