Home / 13,645.23-18,864.24-13,520.67

Finding the Fourth Proportional to 13,645.23, 18,864.24 and 13,520.67

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Solution

The fourth proportional to 13,645.23, 18,864.24 and 13,520.67 is: 18,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.23 : 18,864.24 = 13,520.67 : x
  2. Step 2: Convert to fraction form
    13,645.23/18,864.24 = 13,520.67/x
  3. Step 3: Cross multiply
    13,645.23x = 18,864.24 × 13,520.67
  4. Step 4: Simplify right side
    13,645.23x = 255,057,163.84
  5. Step 5: Solve for x
    x = 255,057,163.84/13,645.23
  6. Step 6: Final answer
    x = 18,692.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.