Home / 45,274.95-67,905-11,997.09

Finding the Fourth Proportional to 45,274.95, 67,905 and 11,997.09

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Solution

The fourth proportional to 45,274.95, 67,905 and 11,997.09 is: 17,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,274.95 : 67,905 = 11,997.09 : x
  2. Step 2: Convert to fraction form
    45,274.95/67,905 = 11,997.09/x
  3. Step 3: Cross multiply
    45,274.95x = 67,905 × 11,997.09
  4. Step 4: Simplify right side
    45,274.95x = 814,662,396.45
  5. Step 5: Solve for x
    x = 814,662,396.45/45,274.95
  6. Step 6: Final answer
    x = 17,993.67

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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.