Home / 31,492.80-43,423.20-18,912.96

Finding the Fourth Proportional to 31,492.80, 43,423.20 and 18,912.96

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Solution

The fourth proportional to 31,492.80, 43,423.20 and 18,912.96 is: 26,077.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,492.80 : 43,423.20 = 18,912.96 : x
  2. Step 2: Convert to fraction form
    31,492.80/43,423.20 = 18,912.96/x
  3. Step 3: Cross multiply
    31,492.80x = 43,423.20 × 18,912.96
  4. Step 4: Simplify right side
    31,492.80x = 821,261,244.67
  5. Step 5: Solve for x
    x = 821,261,244.67/31,492.80
  6. Step 6: Final answer
    x = 26,077.75

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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.