Home / 39,071.90-53,919.15-21,167.36

Finding the Fourth Proportional to 39,071.90, 53,919.15 and 21,167.36

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Solution

The fourth proportional to 39,071.90, 53,919.15 and 21,167.36 is: 29,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,071.90 : 53,919.15 = 21,167.36 : x
  2. Step 2: Convert to fraction form
    39,071.90/53,919.15 = 21,167.36/x
  3. Step 3: Cross multiply
    39,071.90x = 53,919.15 × 21,167.36
  4. Step 4: Simplify right side
    39,071.90x = 1,141,325,789.35
  5. Step 5: Solve for x
    x = 1,141,325,789.35/39,071.90
  6. Step 6: Final answer
    x = 29,210.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.