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Finding the Fourth Proportional to 18,808.16, 28,203.39 and 6,953.76

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Solution

The fourth proportional to 18,808.16, 28,203.39 and 6,953.76 is: 10,427.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.16 : 28,203.39 = 6,953.76 : x
  2. Step 2: Convert to fraction form
    18,808.16/28,203.39 = 6,953.76/x
  3. Step 3: Cross multiply
    18,808.16x = 28,203.39 × 6,953.76
  4. Step 4: Simplify right side
    18,808.16x = 196,119,605.25
  5. Step 5: Solve for x
    x = 196,119,605.25/18,808.16
  6. Step 6: Final answer
    x = 10,427.37

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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.