Home / 20,301.81-30,455.19-8,611.08

Finding the Fourth Proportional to 20,301.81, 30,455.19 and 8,611.08

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Solution

The fourth proportional to 20,301.81, 30,455.19 and 8,611.08 is: 12,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.81 : 30,455.19 = 8,611.08 : x
  2. Step 2: Convert to fraction form
    20,301.81/30,455.19 = 8,611.08/x
  3. Step 3: Cross multiply
    20,301.81x = 30,455.19 × 8,611.08
  4. Step 4: Simplify right side
    20,301.81x = 262,252,077.51
  5. Step 5: Solve for x
    x = 262,252,077.51/20,301.81
  6. Step 6: Final answer
    x = 12,917.67

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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.