Home / 15,074.58-20,812.68-9,699.42

Finding the Fourth Proportional to 15,074.58, 20,812.68 and 9,699.42

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Solution

The fourth proportional to 15,074.58, 20,812.68 and 9,699.42 is: 13,391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.58 : 20,812.68 = 9,699.42 : x
  2. Step 2: Convert to fraction form
    15,074.58/20,812.68 = 9,699.42/x
  3. Step 3: Cross multiply
    15,074.58x = 20,812.68 × 9,699.42
  4. Step 4: Simplify right side
    15,074.58x = 201,870,924.65
  5. Step 5: Solve for x
    x = 201,870,924.65/15,074.58
  6. Step 6: Final answer
    x = 13,391.48

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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.