Home / 20,390.15-30,581.57-5,597.12

Finding the Fourth Proportional to 20,390.15, 30,581.57 and 5,597.12

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Solution

The fourth proportional to 20,390.15, 30,581.57 and 5,597.12 is: 8,394.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.15 : 30,581.57 = 5,597.12 : x
  2. Step 2: Convert to fraction form
    20,390.15/30,581.57 = 5,597.12/x
  3. Step 3: Cross multiply
    20,390.15x = 30,581.57 × 5,597.12
  4. Step 4: Simplify right side
    20,390.15x = 171,168,536.18
  5. Step 5: Solve for x
    x = 171,168,536.18/20,390.15
  6. Step 6: Final answer
    x = 8,394.67

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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.