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Finding the Fourth Proportional to 22,187.60, 30,605.16 and 14,634.32

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Solution

The fourth proportional to 22,187.60, 30,605.16 and 14,634.32 is: 20,186.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.60 : 30,605.16 = 14,634.32 : x
  2. Step 2: Convert to fraction form
    22,187.60/30,605.16 = 14,634.32/x
  3. Step 3: Cross multiply
    22,187.60x = 30,605.16 × 14,634.32
  4. Step 4: Simplify right side
    22,187.60x = 447,885,705.09
  5. Step 5: Solve for x
    x = 447,885,705.09/22,187.60
  6. Step 6: Final answer
    x = 20,186.31

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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.