Home / 39,828.72-59,743.08-12,126

Finding the Fourth Proportional to 39,828.72, 59,743.08 and 12,126

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Solution

The fourth proportional to 39,828.72, 59,743.08 and 12,126 is: 18,189

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.72 : 59,743.08 = 12,126 : x
  2. Step 2: Convert to fraction form
    39,828.72/59,743.08 = 12,126/x
  3. Step 3: Cross multiply
    39,828.72x = 59,743.08 × 12,126
  4. Step 4: Simplify right side
    39,828.72x = 724,444,588.08
  5. Step 5: Solve for x
    x = 724,444,588.08/39,828.72
  6. Step 6: Final answer
    x = 18,189

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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.