Home / 12,291.99-18,438.09-3,527.18

Finding the Fourth Proportional to 12,291.99, 18,438.09 and 3,527.18

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Solution

The fourth proportional to 12,291.99, 18,438.09 and 3,527.18 is: 5,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.99 : 18,438.09 = 3,527.18 : x
  2. Step 2: Convert to fraction form
    12,291.99/18,438.09 = 3,527.18/x
  3. Step 3: Cross multiply
    12,291.99x = 18,438.09 × 3,527.18
  4. Step 4: Simplify right side
    12,291.99x = 65,034,444.65
  5. Step 5: Solve for x
    x = 65,034,444.65/12,291.99
  6. Step 6: Final answer
    x = 5,290.80

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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.