Home / 19,639.80-29,427.30-18,473.40

Finding the Fourth Proportional to 19,639.80, 29,427.30 and 18,473.40

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Solution

The fourth proportional to 19,639.80, 29,427.30 and 18,473.40 is: 27,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.80 : 29,427.30 = 18,473.40 : x
  2. Step 2: Convert to fraction form
    19,639.80/29,427.30 = 18,473.40/x
  3. Step 3: Cross multiply
    19,639.80x = 29,427.30 × 18,473.40
  4. Step 4: Simplify right side
    19,639.80x = 543,622,283.82
  5. Step 5: Solve for x
    x = 543,622,283.82/19,639.80
  6. Step 6: Final answer
    x = 27,679.62

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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.