Home / 13,458.62-18,511.08-10,800.20

Finding the Fourth Proportional to 13,458.62, 18,511.08 and 10,800.20

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Solution

The fourth proportional to 13,458.62, 18,511.08 and 10,800.20 is: 14,854.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.62 : 18,511.08 = 10,800.20 : x
  2. Step 2: Convert to fraction form
    13,458.62/18,511.08 = 10,800.20/x
  3. Step 3: Cross multiply
    13,458.62x = 18,511.08 × 10,800.20
  4. Step 4: Simplify right side
    13,458.62x = 199,923,366.22
  5. Step 5: Solve for x
    x = 199,923,366.22/13,458.62
  6. Step 6: Final answer
    x = 14,854.67

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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.