Home / 19,239.40-28,818.69-12,215.82

Finding the Fourth Proportional to 19,239.40, 28,818.69 and 12,215.82

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Solution

The fourth proportional to 19,239.40, 28,818.69 and 12,215.82 is: 18,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,239.40 : 28,818.69 = 12,215.82 : x
  2. Step 2: Convert to fraction form
    19,239.40/28,818.69 = 12,215.82/x
  3. Step 3: Cross multiply
    19,239.40x = 28,818.69 × 12,215.82
  4. Step 4: Simplify right side
    19,239.40x = 352,043,929.68
  5. Step 5: Solve for x
    x = 352,043,929.68/19,239.40
  6. Step 6: Final answer
    x = 18,298.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.