Home / 15,765.18-21,743.64-10,100.45

Finding the Fourth Proportional to 15,765.18, 21,743.64 and 10,100.45

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Solution

The fourth proportional to 15,765.18, 21,743.64 and 10,100.45 is: 13,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765.18 : 21,743.64 = 10,100.45 : x
  2. Step 2: Convert to fraction form
    15,765.18/21,743.64 = 10,100.45/x
  3. Step 3: Cross multiply
    15,765.18x = 21,743.64 × 10,100.45
  4. Step 4: Simplify right side
    15,765.18x = 219,620,548.64
  5. Step 5: Solve for x
    x = 219,620,548.64/15,765.18
  6. Step 6: Final answer
    x = 13,930.74

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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.