Home / 31,236.42-43,102.01-18,658.50

Finding the Fourth Proportional to 31,236.42, 43,102.01 and 18,658.50

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Solution

The fourth proportional to 31,236.42, 43,102.01 and 18,658.50 is: 25,746.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,236.42 : 43,102.01 = 18,658.50 : x
  2. Step 2: Convert to fraction form
    31,236.42/43,102.01 = 18,658.50/x
  3. Step 3: Cross multiply
    31,236.42x = 43,102.01 × 18,658.50
  4. Step 4: Simplify right side
    31,236.42x = 804,218,853.59
  5. Step 5: Solve for x
    x = 804,218,853.59/31,236.42
  6. Step 6: Final answer
    x = 25,746.19

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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.