Home / 20,518.92-28,316.07-11,087.46

Finding the Fourth Proportional to 20,518.92, 28,316.07 and 11,087.46

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Solution

The fourth proportional to 20,518.92, 28,316.07 and 11,087.46 is: 15,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.92 : 28,316.07 = 11,087.46 : x
  2. Step 2: Convert to fraction form
    20,518.92/28,316.07 = 11,087.46/x
  3. Step 3: Cross multiply
    20,518.92x = 28,316.07 × 11,087.46
  4. Step 4: Simplify right side
    20,518.92x = 313,953,293.48
  5. Step 5: Solve for x
    x = 313,953,293.48/20,518.92
  6. Step 6: Final answer
    x = 15,300.67

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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.