Home / 13,425.76-20,138.64-4,065.67

Finding the Fourth Proportional to 13,425.76, 20,138.64 and 4,065.67

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Solution

The fourth proportional to 13,425.76, 20,138.64 and 4,065.67 is: 6,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.76 : 20,138.64 = 4,065.67 : x
  2. Step 2: Convert to fraction form
    13,425.76/20,138.64 = 4,065.67/x
  3. Step 3: Cross multiply
    13,425.76x = 20,138.64 × 4,065.67
  4. Step 4: Simplify right side
    13,425.76x = 81,877,064.49
  5. Step 5: Solve for x
    x = 81,877,064.49/13,425.76
  6. Step 6: Final answer
    x = 6,098.51

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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.