Home / 20,720.20-28,584.08-14,008.18

Finding the Fourth Proportional to 20,720.20, 28,584.08 and 14,008.18

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Solution

The fourth proportional to 20,720.20, 28,584.08 and 14,008.18 is: 19,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.20 : 28,584.08 = 14,008.18 : x
  2. Step 2: Convert to fraction form
    20,720.20/28,584.08 = 14,008.18/x
  3. Step 3: Cross multiply
    20,720.20x = 28,584.08 × 14,008.18
  4. Step 4: Simplify right side
    20,720.20x = 400,410,937.77
  5. Step 5: Solve for x
    x = 400,410,937.77/20,720.20
  6. Step 6: Final answer
    x = 19,324.67

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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.