Home / 20,468.36-28,244.34-11,515.67

Finding the Fourth Proportional to 20,468.36, 28,244.34 and 11,515.67

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Solution

The fourth proportional to 20,468.36, 28,244.34 and 11,515.67 is: 15,890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.36 : 28,244.34 = 11,515.67 : x
  2. Step 2: Convert to fraction form
    20,468.36/28,244.34 = 11,515.67/x
  3. Step 3: Cross multiply
    20,468.36x = 28,244.34 × 11,515.67
  4. Step 4: Simplify right side
    20,468.36x = 325,252,498.81
  5. Step 5: Solve for x
    x = 325,252,498.81/20,468.36
  6. Step 6: Final answer
    x = 15,890.50

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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.