Home / 20,117.96-30,177.06-11,352.40

Finding the Fourth Proportional to 20,117.96, 30,177.06 and 11,352.40

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Solution

The fourth proportional to 20,117.96, 30,177.06 and 11,352.40 is: 17,028.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.96 : 30,177.06 = 11,352.40 : x
  2. Step 2: Convert to fraction form
    20,117.96/30,177.06 = 11,352.40/x
  3. Step 3: Cross multiply
    20,117.96x = 30,177.06 × 11,352.40
  4. Step 4: Simplify right side
    20,117.96x = 342,582,055.94
  5. Step 5: Solve for x
    x = 342,582,055.94/20,117.96
  6. Step 6: Final answer
    x = 17,028.67

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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.