Home / 15,450.80-21,322.68-9,078.32

Finding the Fourth Proportional to 15,450.80, 21,322.68 and 9,078.32

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Solution

The fourth proportional to 15,450.80, 21,322.68 and 9,078.32 is: 12,528.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.80 : 21,322.68 = 9,078.32 : x
  2. Step 2: Convert to fraction form
    15,450.80/21,322.68 = 9,078.32/x
  3. Step 3: Cross multiply
    15,450.80x = 21,322.68 × 9,078.32
  4. Step 4: Simplify right side
    15,450.80x = 193,574,112.30
  5. Step 5: Solve for x
    x = 193,574,112.30/15,450.80
  6. Step 6: Final answer
    x = 12,528.42

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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.