Home / 18,738.18-28,108.34-7,051.50

Finding the Fourth Proportional to 18,738.18, 28,108.34 and 7,051.50

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Solution

The fourth proportional to 18,738.18, 28,108.34 and 7,051.50 is: 10,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.18 : 28,108.34 = 7,051.50 : x
  2. Step 2: Convert to fraction form
    18,738.18/28,108.34 = 7,051.50/x
  3. Step 3: Cross multiply
    18,738.18x = 28,108.34 × 7,051.50
  4. Step 4: Simplify right side
    18,738.18x = 198,205,959.51
  5. Step 5: Solve for x
    x = 198,205,959.51/18,738.18
  6. Step 6: Final answer
    x = 10,577.65

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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.