Home / 18,869.34-28,307.43-7,769.98

Finding the Fourth Proportional to 18,869.34, 28,307.43 and 7,769.98

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Solution

The fourth proportional to 18,869.34, 28,307.43 and 7,769.98 is: 11,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.34 : 28,307.43 = 7,769.98 : x
  2. Step 2: Convert to fraction form
    18,869.34/28,307.43 = 7,769.98/x
  3. Step 3: Cross multiply
    18,869.34x = 28,307.43 × 7,769.98
  4. Step 4: Simplify right side
    18,869.34x = 219,948,164.95
  5. Step 5: Solve for x
    x = 219,948,164.95/18,869.34
  6. Step 6: Final answer
    x = 11,656.38

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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.