Home / 39,590.41-54,634.79-21,685.71

Finding the Fourth Proportional to 39,590.41, 54,634.79 and 21,685.71

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Solution

The fourth proportional to 39,590.41, 54,634.79 and 21,685.71 is: 29,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,590.41 : 54,634.79 = 21,685.71 : x
  2. Step 2: Convert to fraction form
    39,590.41/54,634.79 = 21,685.71/x
  3. Step 3: Cross multiply
    39,590.41x = 54,634.79 × 21,685.71
  4. Step 4: Simplify right side
    39,590.41x = 1,184,794,103.42
  5. Step 5: Solve for x
    x = 1,184,794,103.42/39,590.41
  6. Step 6: Final answer
    x = 29,926.29

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1.5x scale

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.