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Finding the Fourth Proportional to 28,246.74, 42,369.92 and 7,186.59

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Solution

The fourth proportional to 28,246.74, 42,369.92 and 7,186.59 is: 10,779.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.74 : 42,369.92 = 7,186.59 : x
  2. Step 2: Convert to fraction form
    28,246.74/42,369.92 = 7,186.59/x
  3. Step 3: Cross multiply
    28,246.74x = 42,369.92 × 7,186.59
  4. Step 4: Simplify right side
    28,246.74x = 304,495,234.39
  5. Step 5: Solve for x
    x = 304,495,234.39/28,246.74
  6. Step 6: Final answer
    x = 10,779.84

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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.