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Finding the Fourth Proportional to 39,311.03, 58,948.40 and 12,652.11

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Solution

The fourth proportional to 39,311.03, 58,948.40 and 12,652.11 is: 18,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.03 : 58,948.40 = 12,652.11 : x
  2. Step 2: Convert to fraction form
    39,311.03/58,948.40 = 12,652.11/x
  3. Step 3: Cross multiply
    39,311.03x = 58,948.40 × 12,652.11
  4. Step 4: Simplify right side
    39,311.03x = 745,821,577.86
  5. Step 5: Solve for x
    x = 745,821,577.86/39,311.03
  6. Step 6: Final answer
    x = 18,972.33

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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.