Home / 21,011.13-29,007.23-13,947.21

Finding the Fourth Proportional to 21,011.13, 29,007.23 and 13,947.21

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Solution

The fourth proportional to 21,011.13, 29,007.23 and 13,947.21 is: 19,255.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.13 : 29,007.23 = 13,947.21 : x
  2. Step 2: Convert to fraction form
    21,011.13/29,007.23 = 13,947.21/x
  3. Step 3: Cross multiply
    21,011.13x = 29,007.23 × 13,947.21
  4. Step 4: Simplify right side
    21,011.13x = 404,569,858.59
  5. Step 5: Solve for x
    x = 404,569,858.59/21,011.13
  6. Step 6: Final answer
    x = 19,255.03

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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.