Home / 39,231.03-54,138.69-21,326.07

Finding the Fourth Proportional to 39,231.03, 54,138.69 and 21,326.07

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Solution

The fourth proportional to 39,231.03, 54,138.69 and 21,326.07 is: 29,429.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,231.03 : 54,138.69 = 21,326.07 : x
  2. Step 2: Convert to fraction form
    39,231.03/54,138.69 = 21,326.07/x
  3. Step 3: Cross multiply
    39,231.03x = 54,138.69 × 21,326.07
  4. Step 4: Simplify right side
    39,231.03x = 1,154,565,492.65
  5. Step 5: Solve for x
    x = 1,154,565,492.65/39,231.03
  6. Step 6: Final answer
    x = 29,429.91

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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.