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Finding the Fourth Proportional to 19,206.88, 28,823.28 and 7,518.64

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Solution

The fourth proportional to 19,206.88, 28,823.28 and 7,518.64 is: 11,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,206.88 : 28,823.28 = 7,518.64 : x
  2. Step 2: Convert to fraction form
    19,206.88/28,823.28 = 7,518.64/x
  3. Step 3: Cross multiply
    19,206.88x = 28,823.28 × 7,518.64
  4. Step 4: Simplify right side
    19,206.88x = 216,711,865.94
  5. Step 5: Solve for x
    x = 216,711,865.94/19,206.88
  6. Step 6: Final answer
    x = 11,283.03

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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.