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Finding the Fourth Proportional to 12,527.76, 18,818.76 and 8,142.96

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Solution

The fourth proportional to 12,527.76, 18,818.76 and 8,142.96 is: 12,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,527.76 : 18,818.76 = 8,142.96 : x
  2. Step 2: Convert to fraction form
    12,527.76/18,818.76 = 8,142.96/x
  3. Step 3: Cross multiply
    12,527.76x = 18,818.76 × 8,142.96
  4. Step 4: Simplify right side
    12,527.76x = 153,240,409.93
  5. Step 5: Solve for x
    x = 153,240,409.93/12,527.76
  6. Step 6: Final answer
    x = 12,232.07

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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.