Home / 30,644.31-45,979.23-15,856.55

Finding the Fourth Proportional to 30,644.31, 45,979.23 and 15,856.55

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Solution

The fourth proportional to 30,644.31, 45,979.23 and 15,856.55 is: 23,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.31 : 45,979.23 = 15,856.55 : x
  2. Step 2: Convert to fraction form
    30,644.31/45,979.23 = 15,856.55/x
  3. Step 3: Cross multiply
    30,644.31x = 45,979.23 × 15,856.55
  4. Step 4: Simplify right side
    30,644.31x = 729,071,729.56
  5. Step 5: Solve for x
    x = 729,071,729.56/30,644.31
  6. Step 6: Final answer
    x = 23,791.42

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1.5x scale

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.