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Finding the Fourth Proportional to 14,420.34, 19,902.06 and 8,453.48

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Solution

The fourth proportional to 14,420.34, 19,902.06 and 8,453.48 is: 11,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.34 : 19,902.06 = 8,453.48 : x
  2. Step 2: Convert to fraction form
    14,420.34/19,902.06 = 8,453.48/x
  3. Step 3: Cross multiply
    14,420.34x = 19,902.06 × 8,453.48
  4. Step 4: Simplify right side
    14,420.34x = 168,241,566.66
  5. Step 5: Solve for x
    x = 168,241,566.66/14,420.34
  6. Step 6: Final answer
    x = 11,666.96

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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.