Home / 43,218.38-64,827.58-13,638.52

Finding the Fourth Proportional to 43,218.38, 64,827.58 and 13,638.52

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Solution

The fourth proportional to 43,218.38, 64,827.58 and 13,638.52 is: 20,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,218.38 : 64,827.58 = 13,638.52 : x
  2. Step 2: Convert to fraction form
    43,218.38/64,827.58 = 13,638.52/x
  3. Step 3: Cross multiply
    43,218.38x = 64,827.58 × 13,638.52
  4. Step 4: Simplify right side
    43,218.38x = 884,152,246.38
  5. Step 5: Solve for x
    x = 884,152,246.38/43,218.38
  6. Step 6: Final answer
    x = 20,457.78

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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.