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Finding the Fourth Proportional to 39,730.50, 59,603.04 and 18,954

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Solution

The fourth proportional to 39,730.50, 59,603.04 and 18,954 is: 28,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,730.50 : 59,603.04 = 18,954 : x
  2. Step 2: Convert to fraction form
    39,730.50/59,603.04 = 18,954/x
  3. Step 3: Cross multiply
    39,730.50x = 59,603.04 × 18,954
  4. Step 4: Simplify right side
    39,730.50x = 1,129,716,020.16
  5. Step 5: Solve for x
    x = 1,129,716,020.16/39,730.50
  6. Step 6: Final answer
    x = 28,434.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.