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Finding the Fourth Proportional to 21,735.54, 29,994.21 and 12,303.54

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Solution

The fourth proportional to 21,735.54, 29,994.21 and 12,303.54 is: 16,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.54 : 29,994.21 = 12,303.54 : x
  2. Step 2: Convert to fraction form
    21,735.54/29,994.21 = 12,303.54/x
  3. Step 3: Cross multiply
    21,735.54x = 29,994.21 × 12,303.54
  4. Step 4: Simplify right side
    21,735.54x = 369,034,962.50
  5. Step 5: Solve for x
    x = 369,034,962.50/21,735.54
  6. Step 6: Final answer
    x = 16,978.41

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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.