Home / 31,518.18-43,491.98-18,768.83

Finding the Fourth Proportional to 31,518.18, 43,491.98 and 18,768.83

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Solution

The fourth proportional to 31,518.18, 43,491.98 and 18,768.83 is: 25,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.18 : 43,491.98 = 18,768.83 : x
  2. Step 2: Convert to fraction form
    31,518.18/43,491.98 = 18,768.83/x
  3. Step 3: Cross multiply
    31,518.18x = 43,491.98 × 18,768.83
  4. Step 4: Simplify right side
    31,518.18x = 816,293,267.68
  5. Step 5: Solve for x
    x = 816,293,267.68/31,518.18
  6. Step 6: Final answer
    x = 25,899.12

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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.