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Finding the Fourth Proportional to 14,420.97, 19,897.54 and 8,755.61

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Solution

The fourth proportional to 14,420.97, 19,897.54 and 8,755.61 is: 12,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.97 : 19,897.54 = 8,755.61 : x
  2. Step 2: Convert to fraction form
    14,420.97/19,897.54 = 8,755.61/x
  3. Step 3: Cross multiply
    14,420.97x = 19,897.54 × 8,755.61
  4. Step 4: Simplify right side
    14,420.97x = 174,214,978.82
  5. Step 5: Solve for x
    x = 174,214,978.82/14,420.97
  6. Step 6: Final answer
    x = 12,080.67

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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.