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Finding the Fourth Proportional to 28,668.58, 42,985.84 and 10,900.54

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Solution

The fourth proportional to 28,668.58, 42,985.84 and 10,900.54 is: 16,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,668.58 : 42,985.84 = 10,900.54 : x
  2. Step 2: Convert to fraction form
    28,668.58/42,985.84 = 10,900.54/x
  3. Step 3: Cross multiply
    28,668.58x = 42,985.84 × 10,900.54
  4. Step 4: Simplify right side
    28,668.58x = 468,568,915.27
  5. Step 5: Solve for x
    x = 468,568,915.27/28,668.58
  6. Step 6: Final answer
    x = 16,344.34

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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.