Home / 31,254.38-46,887.06-20,171.78

Finding the Fourth Proportional to 31,254.38, 46,887.06 and 20,171.78

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Solution

The fourth proportional to 31,254.38, 46,887.06 and 20,171.78 is: 30,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,254.38 : 46,887.06 = 20,171.78 : x
  2. Step 2: Convert to fraction form
    31,254.38/46,887.06 = 20,171.78/x
  3. Step 3: Cross multiply
    31,254.38x = 46,887.06 × 20,171.78
  4. Step 4: Simplify right side
    31,254.38x = 945,795,459.17
  5. Step 5: Solve for x
    x = 945,795,459.17/31,254.38
  6. Step 6: Final answer
    x = 30,261.21

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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.