Home / 28,393.36-39,182.62-15,818

Finding the Fourth Proportional to 28,393.36, 39,182.62 and 15,818

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Solution

The fourth proportional to 28,393.36, 39,182.62 and 15,818 is: 21,828.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.36 : 39,182.62 = 15,818 : x
  2. Step 2: Convert to fraction form
    28,393.36/39,182.62 = 15,818/x
  3. Step 3: Cross multiply
    28,393.36x = 39,182.62 × 15,818
  4. Step 4: Simplify right side
    28,393.36x = 619,790,683.16
  5. Step 5: Solve for x
    x = 619,790,683.16/28,393.36
  6. Step 6: Final answer
    x = 21,828.72

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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.