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Finding the Fourth Proportional to 21,100.22, 29,088.25 and 14,377.22

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Solution

The fourth proportional to 21,100.22, 29,088.25 and 14,377.22 is: 19,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.22 : 29,088.25 = 14,377.22 : x
  2. Step 2: Convert to fraction form
    21,100.22/29,088.25 = 14,377.22/x
  3. Step 3: Cross multiply
    21,100.22x = 29,088.25 × 14,377.22
  4. Step 4: Simplify right side
    21,100.22x = 418,208,097.36
  5. Step 5: Solve for x
    x = 418,208,097.36/21,100.22
  6. Step 6: Final answer
    x = 19,820.08

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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.