Home / 35,511.64-49,020.09-21,361.78

Finding the Fourth Proportional to 35,511.64, 49,020.09 and 21,361.78

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Solution

The fourth proportional to 35,511.64, 49,020.09 and 21,361.78 is: 29,487.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,511.64 : 49,020.09 = 21,361.78 : x
  2. Step 2: Convert to fraction form
    35,511.64/49,020.09 = 21,361.78/x
  3. Step 3: Cross multiply
    35,511.64x = 49,020.09 × 21,361.78
  4. Step 4: Simplify right side
    35,511.64x = 1,047,156,378.16
  5. Step 5: Solve for x
    x = 1,047,156,378.16/35,511.64
  6. Step 6: Final answer
    x = 29,487.69

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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.