Home / 14,900.21-20,561.69-8,185.51

Finding the Fourth Proportional to 14,900.21, 20,561.69 and 8,185.51

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Solution

The fourth proportional to 14,900.21, 20,561.69 and 8,185.51 is: 11,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,900.21 : 20,561.69 = 8,185.51 : x
  2. Step 2: Convert to fraction form
    14,900.21/20,561.69 = 8,185.51/x
  3. Step 3: Cross multiply
    14,900.21x = 20,561.69 × 8,185.51
  4. Step 4: Simplify right side
    14,900.21x = 168,307,775.38
  5. Step 5: Solve for x
    x = 168,307,775.38/14,900.21
  6. Step 6: Final answer
    x = 11,295.67

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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.