Home / 19,871.10-27,424.71-12,818.03

Finding the Fourth Proportional to 19,871.10, 27,424.71 and 12,818.03

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Solution

The fourth proportional to 19,871.10, 27,424.71 and 12,818.03 is: 17,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.10 : 27,424.71 = 12,818.03 : x
  2. Step 2: Convert to fraction form
    19,871.10/27,424.71 = 12,818.03/x
  3. Step 3: Cross multiply
    19,871.10x = 27,424.71 × 12,818.03
  4. Step 4: Simplify right side
    19,871.10x = 351,530,618.40
  5. Step 5: Solve for x
    x = 351,530,618.40/19,871.10
  6. Step 6: Final answer
    x = 17,690.55

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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.