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Finding the Fourth Proportional to 28,474.81, 42,697.87 and 9,492.72

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Solution

The fourth proportional to 28,474.81, 42,697.87 and 9,492.72 is: 14,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.81 : 42,697.87 = 9,492.72 : x
  2. Step 2: Convert to fraction form
    28,474.81/42,697.87 = 9,492.72/x
  3. Step 3: Cross multiply
    28,474.81x = 42,697.87 × 9,492.72
  4. Step 4: Simplify right side
    28,474.81x = 405,318,924.51
  5. Step 5: Solve for x
    x = 405,318,924.51/28,474.81
  6. Step 6: Final answer
    x = 14,234.30

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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.