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Finding the Fourth Proportional to 28,495.38, 42,741.44 and 7,717.26

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Solution

The fourth proportional to 28,495.38, 42,741.44 and 7,717.26 is: 11,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.38 : 42,741.44 = 7,717.26 : x
  2. Step 2: Convert to fraction form
    28,495.38/42,741.44 = 7,717.26/x
  3. Step 3: Cross multiply
    28,495.38x = 42,741.44 × 7,717.26
  4. Step 4: Simplify right side
    28,495.38x = 329,846,805.25
  5. Step 5: Solve for x
    x = 329,846,805.25/28,495.38
  6. Step 6: Final answer
    x = 11,575.45

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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.