Home / 13,434.03-20,155.07-5,424.67

Finding the Fourth Proportional to 13,434.03, 20,155.07 and 5,424.67

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Solution

The fourth proportional to 13,434.03, 20,155.07 and 5,424.67 is: 8,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.03 : 20,155.07 = 5,424.67 : x
  2. Step 2: Convert to fraction form
    13,434.03/20,155.07 = 5,424.67/x
  3. Step 3: Cross multiply
    13,434.03x = 20,155.07 × 5,424.67
  4. Step 4: Simplify right side
    13,434.03x = 109,334,576.45
  5. Step 5: Solve for x
    x = 109,334,576.45/13,434.03
  6. Step 6: Final answer
    x = 8,138.63

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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.