Home / 12,304.12-18,415.68-8,739.40

Finding the Fourth Proportional to 12,304.12, 18,415.68 and 8,739.40

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Solution

The fourth proportional to 12,304.12, 18,415.68 and 8,739.40 is: 13,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.12 : 18,415.68 = 8,739.40 : x
  2. Step 2: Convert to fraction form
    12,304.12/18,415.68 = 8,739.40/x
  3. Step 3: Cross multiply
    12,304.12x = 18,415.68 × 8,739.40
  4. Step 4: Simplify right side
    12,304.12x = 160,941,993.79
  5. Step 5: Solve for x
    x = 160,941,993.79/12,304.12
  6. Step 6: Final answer
    x = 13,080.33

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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.