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Finding the Fourth Proportional to 26,953.78, 40,429.32 and 10,321.78

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Solution

The fourth proportional to 26,953.78, 40,429.32 and 10,321.78 is: 15,482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,953.78 : 40,429.32 = 10,321.78 : x
  2. Step 2: Convert to fraction form
    26,953.78/40,429.32 = 10,321.78/x
  3. Step 3: Cross multiply
    26,953.78x = 40,429.32 × 10,321.78
  4. Step 4: Simplify right side
    26,953.78x = 417,302,546.59
  5. Step 5: Solve for x
    x = 417,302,546.59/26,953.78
  6. Step 6: Final answer
    x = 15,482.15

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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.