Home / 39,628.12-59,479.16-20,922

Finding the Fourth Proportional to 39,628.12, 59,479.16 and 20,922

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Solution

The fourth proportional to 39,628.12, 59,479.16 and 20,922 is: 31,402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.12 : 59,479.16 = 20,922 : x
  2. Step 2: Convert to fraction form
    39,628.12/59,479.16 = 20,922/x
  3. Step 3: Cross multiply
    39,628.12x = 59,479.16 × 20,922
  4. Step 4: Simplify right side
    39,628.12x = 1,244,422,985.52
  5. Step 5: Solve for x
    x = 1,244,422,985.52/39,628.12
  6. Step 6: Final answer
    x = 31,402.52

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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.