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Finding the Fourth Proportional to 18,846.88, 28,271.10 and 7,003.76

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Solution

The fourth proportional to 18,846.88, 28,271.10 and 7,003.76 is: 10,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.88 : 28,271.10 = 7,003.76 : x
  2. Step 2: Convert to fraction form
    18,846.88/28,271.10 = 7,003.76/x
  3. Step 3: Cross multiply
    18,846.88x = 28,271.10 × 7,003.76
  4. Step 4: Simplify right side
    18,846.88x = 198,003,999.34
  5. Step 5: Solve for x
    x = 198,003,999.34/18,846.88
  6. Step 6: Final answer
    x = 10,505.93

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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.