Home / 12,306.08-18,458.80-3,072.16

Finding the Fourth Proportional to 12,306.08, 18,458.80 and 3,072.16

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Solution

The fourth proportional to 12,306.08, 18,458.80 and 3,072.16 is: 4,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.08 : 18,458.80 = 3,072.16 : x
  2. Step 2: Convert to fraction form
    12,306.08/18,458.80 = 3,072.16/x
  3. Step 3: Cross multiply
    12,306.08x = 18,458.80 × 3,072.16
  4. Step 4: Simplify right side
    12,306.08x = 56,708,387.01
  5. Step 5: Solve for x
    x = 56,708,387.01/12,306.08
  6. Step 6: Final answer
    x = 4,608.16

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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.