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Finding the Fourth Proportional to 43,595.72, 65,394.19 and 12,430.97

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Solution

The fourth proportional to 43,595.72, 65,394.19 and 12,430.97 is: 18,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,595.72 : 65,394.19 = 12,430.97 : x
  2. Step 2: Convert to fraction form
    43,595.72/65,394.19 = 12,430.97/x
  3. Step 3: Cross multiply
    43,595.72x = 65,394.19 × 12,430.97
  4. Step 4: Simplify right side
    43,595.72x = 812,913,077.94
  5. Step 5: Solve for x
    x = 812,913,077.94/43,595.72
  6. Step 6: Final answer
    x = 18,646.63

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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.