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Finding the Fourth Proportional to 18,539.28, 27,808.92 and 4,688.28

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Solution

The fourth proportional to 18,539.28, 27,808.92 and 4,688.28 is: 7,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,539.28 : 27,808.92 = 4,688.28 : x
  2. Step 2: Convert to fraction form
    18,539.28/27,808.92 = 4,688.28/x
  3. Step 3: Cross multiply
    18,539.28x = 27,808.92 × 4,688.28
  4. Step 4: Simplify right side
    18,539.28x = 130,376,003.46
  5. Step 5: Solve for x
    x = 130,376,003.46/18,539.28
  6. Step 6: Final answer
    x = 7,032.42

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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.