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Finding the Fourth Proportional to 18,666.66, 28,004.13 and 6,820.41

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Solution

The fourth proportional to 18,666.66, 28,004.13 and 6,820.41 is: 10,232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.66 : 28,004.13 = 6,820.41 : x
  2. Step 2: Convert to fraction form
    18,666.66/28,004.13 = 6,820.41/x
  3. Step 3: Cross multiply
    18,666.66x = 28,004.13 × 6,820.41
  4. Step 4: Simplify right side
    18,666.66x = 190,999,508.27
  5. Step 5: Solve for x
    x = 190,999,508.27/18,666.66
  6. Step 6: Final answer
    x = 10,232.12

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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.