Home / 20,803.10-28,729.26-13,252.84

Finding the Fourth Proportional to 20,803.10, 28,729.26 and 13,252.84

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Solution

The fourth proportional to 20,803.10, 28,729.26 and 13,252.84 is: 18,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.10 : 28,729.26 = 13,252.84 : x
  2. Step 2: Convert to fraction form
    20,803.10/28,729.26 = 13,252.84/x
  3. Step 3: Cross multiply
    20,803.10x = 28,729.26 × 13,252.84
  4. Step 4: Simplify right side
    20,803.10x = 380,744,214.28
  5. Step 5: Solve for x
    x = 380,744,214.28/20,803.10
  6. Step 6: Final answer
    x = 18,302.29

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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.