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Finding the Fourth Proportional to 23,677.80, 35,443.80 and 21,053.40

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Solution

The fourth proportional to 23,677.80, 35,443.80 and 21,053.40 is: 31,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,677.80 : 35,443.80 = 21,053.40 : x
  2. Step 2: Convert to fraction form
    23,677.80/35,443.80 = 21,053.40/x
  3. Step 3: Cross multiply
    23,677.80x = 35,443.80 × 21,053.40
  4. Step 4: Simplify right side
    23,677.80x = 746,212,498.92
  5. Step 5: Solve for x
    x = 746,212,498.92/23,677.80
  6. Step 6: Final answer
    x = 31,515.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.