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Finding the Fourth Proportional to 18,838.76, 28,238.42 and 6,354.48

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Solution

The fourth proportional to 18,838.76, 28,238.42 and 6,354.48 is: 9,525.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.76 : 28,238.42 = 6,354.48 : x
  2. Step 2: Convert to fraction form
    18,838.76/28,238.42 = 6,354.48/x
  3. Step 3: Cross multiply
    18,838.76x = 28,238.42 × 6,354.48
  4. Step 4: Simplify right side
    18,838.76x = 179,440,475.12
  5. Step 5: Solve for x
    x = 179,440,475.12/18,838.76
  6. Step 6: Final answer
    x = 9,525.07

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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.