Home / 31,814.98-43,911.12-18,386.80

Finding the Fourth Proportional to 31,814.98, 43,911.12 and 18,386.80

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Solution

The fourth proportional to 31,814.98, 43,911.12 and 18,386.80 is: 25,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.98 : 43,911.12 = 18,386.80 : x
  2. Step 2: Convert to fraction form
    31,814.98/43,911.12 = 18,386.80/x
  3. Step 3: Cross multiply
    31,814.98x = 43,911.12 × 18,386.80
  4. Step 4: Simplify right side
    31,814.98x = 807,384,981.22
  5. Step 5: Solve for x
    x = 807,384,981.22/31,814.98
  6. Step 6: Final answer
    x = 25,377.51

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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.