Home / 12,315.45-18,473.16-3,081.45

Finding the Fourth Proportional to 12,315.45, 18,473.16 and 3,081.45

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Solution

The fourth proportional to 12,315.45, 18,473.16 and 3,081.45 is: 4,622.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.45 : 18,473.16 = 3,081.45 : x
  2. Step 2: Convert to fraction form
    12,315.45/18,473.16 = 3,081.45/x
  3. Step 3: Cross multiply
    12,315.45x = 18,473.16 × 3,081.45
  4. Step 4: Simplify right side
    12,315.45x = 56,924,118.88
  5. Step 5: Solve for x
    x = 56,924,118.88/12,315.45
  6. Step 6: Final answer
    x = 4,622.17

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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.