Home / 39,828.48-59,749.20-12,120

Finding the Fourth Proportional to 39,828.48, 59,749.20 and 12,120

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Solution

The fourth proportional to 39,828.48, 59,749.20 and 12,120 is: 18,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,828.48 : 59,749.20 = 12,120 : x
  2. Step 2: Convert to fraction form
    39,828.48/59,749.20 = 12,120/x
  3. Step 3: Cross multiply
    39,828.48x = 59,749.20 × 12,120
  4. Step 4: Simplify right side
    39,828.48x = 724,160,304
  5. Step 5: Solve for x
    x = 724,160,304/39,828.48
  6. Step 6: Final answer
    x = 18,181.97

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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.