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Finding the Fourth Proportional to 12,470.96, 18,707.26 and 4,679.98

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Solution

The fourth proportional to 12,470.96, 18,707.26 and 4,679.98 is: 7,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.96 : 18,707.26 = 4,679.98 : x
  2. Step 2: Convert to fraction form
    12,470.96/18,707.26 = 4,679.98/x
  3. Step 3: Cross multiply
    12,470.96x = 18,707.26 × 4,679.98
  4. Step 4: Simplify right side
    12,470.96x = 87,549,602.65
  5. Step 5: Solve for x
    x = 87,549,602.65/12,470.96
  6. Step 6: Final answer
    x = 7,020.28

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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.