Home / 13,828.12-20,742.09-8,283.04

Finding the Fourth Proportional to 13,828.12, 20,742.09 and 8,283.04

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Solution

The fourth proportional to 13,828.12, 20,742.09 and 8,283.04 is: 12,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.12 : 20,742.09 = 8,283.04 : x
  2. Step 2: Convert to fraction form
    13,828.12/20,742.09 = 8,283.04/x
  3. Step 3: Cross multiply
    13,828.12x = 20,742.09 × 8,283.04
  4. Step 4: Simplify right side
    13,828.12x = 171,807,561.15
  5. Step 5: Solve for x
    x = 171,807,561.15/13,828.12
  6. Step 6: Final answer
    x = 12,424.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.