Home / 31,719.12-47,563.77-18,395.90

Finding the Fourth Proportional to 31,719.12, 47,563.77 and 18,395.90

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Solution

The fourth proportional to 31,719.12, 47,563.77 and 18,395.90 is: 27,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.12 : 47,563.77 = 18,395.90 : x
  2. Step 2: Convert to fraction form
    31,719.12/47,563.77 = 18,395.90/x
  3. Step 3: Cross multiply
    31,719.12x = 47,563.77 × 18,395.90
  4. Step 4: Simplify right side
    31,719.12x = 874,978,356.54
  5. Step 5: Solve for x
    x = 874,978,356.54/31,719.12
  6. Step 6: Final answer
    x = 27,585.20

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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.