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Finding the Fourth Proportional to 28,495.56, 42,741.74 and 8,771.56

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Solution

The fourth proportional to 28,495.56, 42,741.74 and 8,771.56 is: 13,156.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.56 : 42,741.74 = 8,771.56 : x
  2. Step 2: Convert to fraction form
    28,495.56/42,741.74 = 8,771.56/x
  3. Step 3: Cross multiply
    28,495.56x = 42,741.74 × 8,771.56
  4. Step 4: Simplify right side
    28,495.56x = 374,911,736.91
  5. Step 5: Solve for x
    x = 374,911,736.91/28,495.56
  6. Step 6: Final answer
    x = 13,156.85

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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.