Home / 13,900.71-20,845.86-5,013.70

Finding the Fourth Proportional to 13,900.71, 20,845.86 and 5,013.70

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Solution

The fourth proportional to 13,900.71, 20,845.86 and 5,013.70 is: 7,518.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.71 : 20,845.86 = 5,013.70 : x
  2. Step 2: Convert to fraction form
    13,900.71/20,845.86 = 5,013.70/x
  3. Step 3: Cross multiply
    13,900.71x = 20,845.86 × 5,013.70
  4. Step 4: Simplify right side
    13,900.71x = 104,514,817.37
  5. Step 5: Solve for x
    x = 104,514,817.37/13,900.71
  6. Step 6: Final answer
    x = 7,518.67

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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.