Home / 21,140.43-29,107.40-17,947.11

Finding the Fourth Proportional to 21,140.43, 29,107.40 and 17,947.11

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Solution

The fourth proportional to 21,140.43, 29,107.40 and 17,947.11 is: 24,710.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.43 : 29,107.40 = 17,947.11 : x
  2. Step 2: Convert to fraction form
    21,140.43/29,107.40 = 17,947.11/x
  3. Step 3: Cross multiply
    21,140.43x = 29,107.40 × 17,947.11
  4. Step 4: Simplify right side
    21,140.43x = 522,393,619.88
  5. Step 5: Solve for x
    x = 522,393,619.88/21,140.43
  6. Step 6: Final answer
    x = 24,710.64

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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.