Home / 18,666.98-28,003.20-6,821.34

Finding the Fourth Proportional to 18,666.98, 28,003.20 and 6,821.34

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Solution

The fourth proportional to 18,666.98, 28,003.20 and 6,821.34 is: 10,233.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.98 : 28,003.20 = 6,821.34 : x
  2. Step 2: Convert to fraction form
    18,666.98/28,003.20 = 6,821.34/x
  3. Step 3: Cross multiply
    18,666.98x = 28,003.20 × 6,821.34
  4. Step 4: Simplify right side
    18,666.98x = 191,019,348.29
  5. Step 5: Solve for x
    x = 191,019,348.29/18,666.98
  6. Step 6: Final answer
    x = 10,233.01

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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.