Home / 20,859.18-31,291.49-10,998.82

Finding the Fourth Proportional to 20,859.18, 31,291.49 and 10,998.82

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Solution

The fourth proportional to 20,859.18, 31,291.49 and 10,998.82 is: 16,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.18 : 31,291.49 = 10,998.82 : x
  2. Step 2: Convert to fraction form
    20,859.18/31,291.49 = 10,998.82/x
  3. Step 3: Cross multiply
    20,859.18x = 31,291.49 × 10,998.82
  4. Step 4: Simplify right side
    20,859.18x = 344,169,466.04
  5. Step 5: Solve for x
    x = 344,169,466.04/20,859.18
  6. Step 6: Final answer
    x = 16,499.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.