Home / 21,101.23-29,089.62-14,378.23

Finding the Fourth Proportional to 21,101.23, 29,089.62 and 14,378.23

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Solution

The fourth proportional to 21,101.23, 29,089.62 and 14,378.23 is: 19,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.23 : 29,089.62 = 14,378.23 : x
  2. Step 2: Convert to fraction form
    21,101.23/29,089.62 = 14,378.23/x
  3. Step 3: Cross multiply
    21,101.23x = 29,089.62 × 14,378.23
  4. Step 4: Simplify right side
    21,101.23x = 418,257,246.97
  5. Step 5: Solve for x
    x = 418,257,246.97/21,101.23
  6. Step 6: Final answer
    x = 19,821.46

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Double scale
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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.