Home / 19,966.87-27,563.13-12,896.74

Finding the Fourth Proportional to 19,966.87, 27,563.13 and 12,896.74

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Solution

The fourth proportional to 19,966.87, 27,563.13 and 12,896.74 is: 17,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,966.87 : 27,563.13 = 12,896.74 : x
  2. Step 2: Convert to fraction form
    19,966.87/27,563.13 = 12,896.74/x
  3. Step 3: Cross multiply
    19,966.87x = 27,563.13 × 12,896.74
  4. Step 4: Simplify right side
    19,966.87x = 355,474,318.90
  5. Step 5: Solve for x
    x = 355,474,318.90/19,966.87
  6. Step 6: Final answer
    x = 17,803.21

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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.