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Finding the Fourth Proportional to 15,379.74, 23,062.32 and 7,976.79

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Solution

The fourth proportional to 15,379.74, 23,062.32 and 7,976.79 is: 11,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.74 : 23,062.32 = 7,976.79 : x
  2. Step 2: Convert to fraction form
    15,379.74/23,062.32 = 7,976.79/x
  3. Step 3: Cross multiply
    15,379.74x = 23,062.32 × 7,976.79
  4. Step 4: Simplify right side
    15,379.74x = 183,963,283.55
  5. Step 5: Solve for x
    x = 183,963,283.55/15,379.74
  6. Step 6: Final answer
    x = 11,961.40

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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.