Home / 31,836.45-43,931.73-18,408.57

Finding the Fourth Proportional to 31,836.45, 43,931.73 and 18,408.57

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Solution

The fourth proportional to 31,836.45, 43,931.73 and 18,408.57 is: 25,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.45 : 43,931.73 = 18,408.57 : x
  2. Step 2: Convert to fraction form
    31,836.45/43,931.73 = 18,408.57/x
  3. Step 3: Cross multiply
    31,836.45x = 43,931.73 × 18,408.57
  4. Step 4: Simplify right side
    31,836.45x = 808,720,468.66
  5. Step 5: Solve for x
    x = 808,720,468.66/31,836.45
  6. Step 6: Final answer
    x = 25,402.34

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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.