Home / 39,624.82-54,681.38-21,719.44

Finding the Fourth Proportional to 39,624.82, 54,681.38 and 21,719.44

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Solution

The fourth proportional to 39,624.82, 54,681.38 and 21,719.44 is: 29,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,624.82 : 54,681.38 = 21,719.44 : x
  2. Step 2: Convert to fraction form
    39,624.82/54,681.38 = 21,719.44/x
  3. Step 3: Cross multiply
    39,624.82x = 54,681.38 × 21,719.44
  4. Step 4: Simplify right side
    39,624.82x = 1,187,648,678.62
  5. Step 5: Solve for x
    x = 1,187,648,678.62/39,624.82
  6. Step 6: Final answer
    x = 29,972.35

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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.