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Finding the Fourth Proportional to 18,681.98, 28,025.67 and 6,836.90

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Solution

The fourth proportional to 18,681.98, 28,025.67 and 6,836.90 is: 10,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.98 : 28,025.67 = 6,836.90 : x
  2. Step 2: Convert to fraction form
    18,681.98/28,025.67 = 6,836.90/x
  3. Step 3: Cross multiply
    18,681.98x = 28,025.67 × 6,836.90
  4. Step 4: Simplify right side
    18,681.98x = 191,608,703.22
  5. Step 5: Solve for x
    x = 191,608,703.22/18,681.98
  6. Step 6: Final answer
    x = 10,256.34

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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.