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Finding the Fourth Proportional to 19,313.64, 26,650.62 and 10,815.12

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Solution

The fourth proportional to 19,313.64, 26,650.62 and 10,815.12 is: 14,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.64 : 26,650.62 = 10,815.12 : x
  2. Step 2: Convert to fraction form
    19,313.64/26,650.62 = 10,815.12/x
  3. Step 3: Cross multiply
    19,313.64x = 26,650.62 × 10,815.12
  4. Step 4: Simplify right side
    19,313.64x = 288,229,653.37
  5. Step 5: Solve for x
    x = 288,229,653.37/19,313.64
  6. Step 6: Final answer
    x = 14,923.63

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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.