Home / 20,536.81-30,803.69-5,745.40

Finding the Fourth Proportional to 20,536.81, 30,803.69 and 5,745.40

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Solution

The fourth proportional to 20,536.81, 30,803.69 and 5,745.40 is: 8,617.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.81 : 30,803.69 = 5,745.40 : x
  2. Step 2: Convert to fraction form
    20,536.81/30,803.69 = 5,745.40/x
  3. Step 3: Cross multiply
    20,536.81x = 30,803.69 × 5,745.40
  4. Step 4: Simplify right side
    20,536.81x = 176,979,457.88
  5. Step 5: Solve for x
    x = 176,979,457.88/20,536.81
  6. Step 6: Final answer
    x = 8,617.67

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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.