Home / 13,518.91-18,655.90-7,550.67

Finding the Fourth Proportional to 13,518.91, 18,655.90 and 7,550.67

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Solution

The fourth proportional to 13,518.91, 18,655.90 and 7,550.67 is: 10,419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.91 : 18,655.90 = 7,550.67 : x
  2. Step 2: Convert to fraction form
    13,518.91/18,655.90 = 7,550.67/x
  3. Step 3: Cross multiply
    13,518.91x = 18,655.90 × 7,550.67
  4. Step 4: Simplify right side
    13,518.91x = 140,864,451.17
  5. Step 5: Solve for x
    x = 140,864,451.17/13,518.91
  6. Step 6: Final answer
    x = 10,419.81

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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.