Home / 31,688.04-43,739.21-18,268.25

Finding the Fourth Proportional to 31,688.04, 43,739.21 and 18,268.25

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Solution

The fourth proportional to 31,688.04, 43,739.21 and 18,268.25 is: 25,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.04 : 43,739.21 = 18,268.25 : x
  2. Step 2: Convert to fraction form
    31,688.04/43,739.21 = 18,268.25/x
  3. Step 3: Cross multiply
    31,688.04x = 43,739.21 × 18,268.25
  4. Step 4: Simplify right side
    31,688.04x = 799,038,650.06
  5. Step 5: Solve for x
    x = 799,038,650.06/31,688.04
  6. Step 6: Final answer
    x = 25,215.78

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1.5x scale

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.