Home / 15,770.24-21,605.12-15,179.36

Finding the Fourth Proportional to 15,770.24, 21,605.12 and 15,179.36

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Solution

The fourth proportional to 15,770.24, 21,605.12 and 15,179.36 is: 20,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,770.24 : 21,605.12 = 15,179.36 : x
  2. Step 2: Convert to fraction form
    15,770.24/21,605.12 = 15,179.36/x
  3. Step 3: Cross multiply
    15,770.24x = 21,605.12 × 15,179.36
  4. Step 4: Simplify right side
    15,770.24x = 327,951,894.32
  5. Step 5: Solve for x
    x = 327,951,894.32/15,770.24
  6. Step 6: Final answer
    x = 20,795.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.