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Finding the Fourth Proportional to 18,005.30, 26,998.35 and 7,605.30

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Solution

The fourth proportional to 18,005.30, 26,998.35 and 7,605.30 is: 11,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.30 : 26,998.35 = 7,605.30 : x
  2. Step 2: Convert to fraction form
    18,005.30/26,998.35 = 7,605.30/x
  3. Step 3: Cross multiply
    18,005.30x = 26,998.35 × 7,605.30
  4. Step 4: Simplify right side
    18,005.30x = 205,330,551.26
  5. Step 5: Solve for x
    x = 205,330,551.26/18,005.30
  6. Step 6: Final answer
    x = 11,403.90

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1.5x scale

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.