Home / 12,306.72-18,462.80-4,515.60

Finding the Fourth Proportional to 12,306.72, 18,462.80 and 4,515.60

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Solution

The fourth proportional to 12,306.72, 18,462.80 and 4,515.60 is: 6,774.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.72 : 18,462.80 = 4,515.60 : x
  2. Step 2: Convert to fraction form
    12,306.72/18,462.80 = 4,515.60/x
  3. Step 3: Cross multiply
    12,306.72x = 18,462.80 × 4,515.60
  4. Step 4: Simplify right side
    12,306.72x = 83,370,619.68
  5. Step 5: Solve for x
    x = 83,370,619.68/12,306.72
  6. Step 6: Final answer
    x = 6,774.40

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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.