Home / 21,073.14-29,105.46-13,987.26

Finding the Fourth Proportional to 21,073.14, 29,105.46 and 13,987.26

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Solution

The fourth proportional to 21,073.14, 29,105.46 and 13,987.26 is: 19,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.14 : 29,105.46 = 13,987.26 : x
  2. Step 2: Convert to fraction form
    21,073.14/29,105.46 = 13,987.26/x
  3. Step 3: Cross multiply
    21,073.14x = 29,105.46 × 13,987.26
  4. Step 4: Simplify right side
    21,073.14x = 407,105,636.44
  5. Step 5: Solve for x
    x = 407,105,636.44/21,073.14
  6. Step 6: Final answer
    x = 19,318.70

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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.