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Finding the Fourth Proportional to 12,473.61, 18,709.73 and 7,541.92

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Solution

The fourth proportional to 12,473.61, 18,709.73 and 7,541.92 is: 11,312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.61 : 18,709.73 = 7,541.92 : x
  2. Step 2: Convert to fraction form
    12,473.61/18,709.73 = 7,541.92/x
  3. Step 3: Cross multiply
    12,473.61x = 18,709.73 × 7,541.92
  4. Step 4: Simplify right side
    12,473.61x = 141,107,286.88
  5. Step 5: Solve for x
    x = 141,107,286.88/12,473.61
  6. Step 6: Final answer
    x = 11,312.47

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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.