Home / 39,486-59,238.36-11,784.72

Finding the Fourth Proportional to 39,486, 59,238.36 and 11,784.72

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Solution

The fourth proportional to 39,486, 59,238.36 and 11,784.72 is: 17,679.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486 : 59,238.36 = 11,784.72 : x
  2. Step 2: Convert to fraction form
    39,486/59,238.36 = 11,784.72/x
  3. Step 3: Cross multiply
    39,486x = 59,238.36 × 11,784.72
  4. Step 4: Simplify right side
    39,486x = 698,107,485.86
  5. Step 5: Solve for x
    x = 698,107,485.86/39,486
  6. Step 6: Final answer
    x = 17,679.87

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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.