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Finding the Fourth Proportional to 35,405.81, 48,859.49 and 19,489.85

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Solution

The fourth proportional to 35,405.81, 48,859.49 and 19,489.85 is: 26,895.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,405.81 : 48,859.49 = 19,489.85 : x
  2. Step 2: Convert to fraction form
    35,405.81/48,859.49 = 19,489.85/x
  3. Step 3: Cross multiply
    35,405.81x = 48,859.49 × 19,489.85
  4. Step 4: Simplify right side
    35,405.81x = 952,263,935.60
  5. Step 5: Solve for x
    x = 952,263,935.60/35,405.81
  6. Step 6: Final answer
    x = 26,895.70

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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.