Home / 20,352.36-28,070.46-13,635.84

Finding the Fourth Proportional to 20,352.36, 28,070.46 and 13,635.84

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Solution

The fourth proportional to 20,352.36, 28,070.46 and 13,635.84 is: 18,806.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.36 : 28,070.46 = 13,635.84 : x
  2. Step 2: Convert to fraction form
    20,352.36/28,070.46 = 13,635.84/x
  3. Step 3: Cross multiply
    20,352.36x = 28,070.46 × 13,635.84
  4. Step 4: Simplify right side
    20,352.36x = 382,764,301.29
  5. Step 5: Solve for x
    x = 382,764,301.29/20,352.36
  6. Step 6: Final answer
    x = 18,806.88

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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.