Home / 31,318.02-43,220.25-18,742.50

Finding the Fourth Proportional to 31,318.02, 43,220.25 and 18,742.50

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Solution

The fourth proportional to 31,318.02, 43,220.25 and 18,742.50 is: 25,865.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.02 : 43,220.25 = 18,742.50 : x
  2. Step 2: Convert to fraction form
    31,318.02/43,220.25 = 18,742.50/x
  3. Step 3: Cross multiply
    31,318.02x = 43,220.25 × 18,742.50
  4. Step 4: Simplify right side
    31,318.02x = 810,055,535.63
  5. Step 5: Solve for x
    x = 810,055,535.63/31,318.02
  6. Step 6: Final answer
    x = 25,865.48

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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.