Home / 39,807.68-59,701.91-11,720.09

Finding the Fourth Proportional to 39,807.68, 59,701.91 and 11,720.09

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Solution

The fourth proportional to 39,807.68, 59,701.91 and 11,720.09 is: 17,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.68 : 59,701.91 = 11,720.09 : x
  2. Step 2: Convert to fraction form
    39,807.68/59,701.91 = 11,720.09/x
  3. Step 3: Cross multiply
    39,807.68x = 59,701.91 × 11,720.09
  4. Step 4: Simplify right side
    39,807.68x = 699,711,849.03
  5. Step 5: Solve for x
    x = 699,711,849.03/39,807.68
  6. Step 6: Final answer
    x = 17,577.31

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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.