Home / 39,486.80-59,212.92-11,779.28

Finding the Fourth Proportional to 39,486.80, 59,212.92 and 11,779.28

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Solution

The fourth proportional to 39,486.80, 59,212.92 and 11,779.28 is: 17,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486.80 : 59,212.92 = 11,779.28 : x
  2. Step 2: Convert to fraction form
    39,486.80/59,212.92 = 11,779.28/x
  3. Step 3: Cross multiply
    39,486.80x = 59,212.92 × 11,779.28
  4. Step 4: Simplify right side
    39,486.80x = 697,485,564.30
  5. Step 5: Solve for x
    x = 697,485,564.30/39,486.80
  6. Step 6: Final answer
    x = 17,663.77

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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.