Home / 13,188.51-19,780.63-4,872.44

Finding the Fourth Proportional to 13,188.51, 19,780.63 and 4,872.44

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Solution

The fourth proportional to 13,188.51, 19,780.63 and 4,872.44 is: 7,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.51 : 19,780.63 = 4,872.44 : x
  2. Step 2: Convert to fraction form
    13,188.51/19,780.63 = 4,872.44/x
  3. Step 3: Cross multiply
    13,188.51x = 19,780.63 × 4,872.44
  4. Step 4: Simplify right side
    13,188.51x = 96,379,970.11
  5. Step 5: Solve for x
    x = 96,379,970.11/13,188.51
  6. Step 6: Final answer
    x = 7,307.87

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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.