Home / 39,980.80-59,959.76-11,899.68

Finding the Fourth Proportional to 39,980.80, 59,959.76 and 11,899.68

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Solution

The fourth proportional to 39,980.80, 59,959.76 and 11,899.68 is: 17,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.80 : 59,959.76 = 11,899.68 : x
  2. Step 2: Convert to fraction form
    39,980.80/59,959.76 = 11,899.68/x
  3. Step 3: Cross multiply
    39,980.80x = 59,959.76 × 11,899.68
  4. Step 4: Simplify right side
    39,980.80x = 713,501,956.88
  5. Step 5: Solve for x
    x = 713,501,956.88/39,980.80
  6. Step 6: Final answer
    x = 17,846.12

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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.