Home / 19,855.74-27,429.39-15,871.62

Finding the Fourth Proportional to 19,855.74, 27,429.39 and 15,871.62

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Solution

The fourth proportional to 19,855.74, 27,429.39 and 15,871.62 is: 21,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.74 : 27,429.39 = 15,871.62 : x
  2. Step 2: Convert to fraction form
    19,855.74/27,429.39 = 15,871.62/x
  3. Step 3: Cross multiply
    19,855.74x = 27,429.39 × 15,871.62
  4. Step 4: Simplify right side
    19,855.74x = 435,348,854.91
  5. Step 5: Solve for x
    x = 435,348,854.91/19,855.74
  6. Step 6: Final answer
    x = 21,925.59

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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.