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Finding the Fourth Proportional to 35,409.86, 48,863.75 and 19,491.20

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Solution

The fourth proportional to 35,409.86, 48,863.75 and 19,491.20 is: 26,896.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,409.86 : 48,863.75 = 19,491.20 : x
  2. Step 2: Convert to fraction form
    35,409.86/48,863.75 = 19,491.20/x
  3. Step 3: Cross multiply
    35,409.86x = 48,863.75 × 19,491.20
  4. Step 4: Simplify right side
    35,409.86x = 952,412,782.23
  5. Step 5: Solve for x
    x = 952,412,782.23/35,409.86
  6. Step 6: Final answer
    x = 26,896.83

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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.