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Finding the Fourth Proportional to 28,498.98, 42,750.61 and 8,506.89

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Solution

The fourth proportional to 28,498.98, 42,750.61 and 8,506.89 is: 12,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.98 : 42,750.61 = 8,506.89 : x
  2. Step 2: Convert to fraction form
    28,498.98/42,750.61 = 8,506.89/x
  3. Step 3: Cross multiply
    28,498.98x = 42,750.61 × 8,506.89
  4. Step 4: Simplify right side
    28,498.98x = 363,674,704.53
  5. Step 5: Solve for x
    x = 363,674,704.53/28,498.98
  6. Step 6: Final answer
    x = 12,760.97

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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.