Home / 28,278.03-38,997.44-18,188.67

Finding the Fourth Proportional to 28,278.03, 38,997.44 and 18,188.67

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Solution

The fourth proportional to 28,278.03, 38,997.44 and 18,188.67 is: 25,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.03 : 38,997.44 = 18,188.67 : x
  2. Step 2: Convert to fraction form
    28,278.03/38,997.44 = 18,188.67/x
  3. Step 3: Cross multiply
    28,278.03x = 38,997.44 × 18,188.67
  4. Step 4: Simplify right side
    28,278.03x = 709,311,476.06
  5. Step 5: Solve for x
    x = 709,311,476.06/28,278.03
  6. Step 6: Final answer
    x = 25,083.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.