Home / 19,775.88-29,663.78-4,985.96

Finding the Fourth Proportional to 19,775.88, 29,663.78 and 4,985.96

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Solution

The fourth proportional to 19,775.88, 29,663.78 and 4,985.96 is: 7,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.88 : 29,663.78 = 4,985.96 : x
  2. Step 2: Convert to fraction form
    19,775.88/29,663.78 = 4,985.96/x
  3. Step 3: Cross multiply
    19,775.88x = 29,663.78 × 4,985.96
  4. Step 4: Simplify right side
    19,775.88x = 147,902,247.28
  5. Step 5: Solve for x
    x = 147,902,247.28/19,775.88
  6. Step 6: Final answer
    x = 7,478.92

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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.