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Finding the Fourth Proportional to 13,246.62, 18,278.91 and 7,657.62

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Solution

The fourth proportional to 13,246.62, 18,278.91 and 7,657.62 is: 10,566.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.62 : 18,278.91 = 7,657.62 : x
  2. Step 2: Convert to fraction form
    13,246.62/18,278.91 = 7,657.62/x
  3. Step 3: Cross multiply
    13,246.62x = 18,278.91 × 7,657.62
  4. Step 4: Simplify right side
    13,246.62x = 139,972,946.79
  5. Step 5: Solve for x
    x = 139,972,946.79/13,246.62
  6. Step 6: Final answer
    x = 10,566.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.