Home / 35,786.81-49,390.36-21,639.76

Finding the Fourth Proportional to 35,786.81, 49,390.36 and 21,639.76

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Solution

The fourth proportional to 35,786.81, 49,390.36 and 21,639.76 is: 29,865.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,786.81 : 49,390.36 = 21,639.76 : x
  2. Step 2: Convert to fraction form
    35,786.81/49,390.36 = 21,639.76/x
  3. Step 3: Cross multiply
    35,786.81x = 49,390.36 × 21,639.76
  4. Step 4: Simplify right side
    35,786.81x = 1,068,795,359.14
  5. Step 5: Solve for x
    x = 1,068,795,359.14/35,786.81
  6. Step 6: Final answer
    x = 29,865.62

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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.