Home / 31,123.13-42,950.23-16,976.27

Finding the Fourth Proportional to 31,123.13, 42,950.23 and 16,976.27

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Solution

The fourth proportional to 31,123.13, 42,950.23 and 16,976.27 is: 23,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,123.13 : 42,950.23 = 16,976.27 : x
  2. Step 2: Convert to fraction form
    31,123.13/42,950.23 = 16,976.27/x
  3. Step 3: Cross multiply
    31,123.13x = 42,950.23 × 16,976.27
  4. Step 4: Simplify right side
    31,123.13x = 729,134,765.98
  5. Step 5: Solve for x
    x = 729,134,765.98/31,123.13
  6. Step 6: Final answer
    x = 23,427.43

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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.