Home / 12,315.50-18,473.25-3,081.50

Finding the Fourth Proportional to 12,315.50, 18,473.25 and 3,081.50

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Solution

The fourth proportional to 12,315.50, 18,473.25 and 3,081.50 is: 4,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.50 : 18,473.25 = 3,081.50 : x
  2. Step 2: Convert to fraction form
    12,315.50/18,473.25 = 3,081.50/x
  3. Step 3: Cross multiply
    12,315.50x = 18,473.25 × 3,081.50
  4. Step 4: Simplify right side
    12,315.50x = 56,925,319.88
  5. Step 5: Solve for x
    x = 56,925,319.88/12,315.50
  6. Step 6: Final answer
    x = 4,622.25

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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.