Home / 31,838.16-43,933.64-18,408.32

Finding the Fourth Proportional to 31,838.16, 43,933.64 and 18,408.32

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Solution

The fourth proportional to 31,838.16, 43,933.64 and 18,408.32 is: 25,401.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.16 : 43,933.64 = 18,408.32 : x
  2. Step 2: Convert to fraction form
    31,838.16/43,933.64 = 18,408.32/x
  3. Step 3: Cross multiply
    31,838.16x = 43,933.64 × 18,408.32
  4. Step 4: Simplify right side
    31,838.16x = 808,744,503.88
  5. Step 5: Solve for x
    x = 808,744,503.88/31,838.16
  6. Step 6: Final answer
    x = 25,401.74

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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.