Home / 31,809.10-43,911.50-18,377.76

Finding the Fourth Proportional to 31,809.10, 43,911.50 and 18,377.76

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Solution

The fourth proportional to 31,809.10, 43,911.50 and 18,377.76 is: 25,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.10 : 43,911.50 = 18,377.76 : x
  2. Step 2: Convert to fraction form
    31,809.10/43,911.50 = 18,377.76/x
  3. Step 3: Cross multiply
    31,809.10x = 43,911.50 × 18,377.76
  4. Step 4: Simplify right side
    31,809.10x = 806,995,008.24
  5. Step 5: Solve for x
    x = 806,995,008.24/31,809.10
  6. Step 6: Final answer
    x = 25,369.94

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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.