Home / 21,205.38-31,813.24-14,977.56

Finding the Fourth Proportional to 21,205.38, 31,813.24 and 14,977.56

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Solution

The fourth proportional to 21,205.38, 31,813.24 and 14,977.56 is: 22,469.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.38 : 31,813.24 = 14,977.56 : x
  2. Step 2: Convert to fraction form
    21,205.38/31,813.24 = 14,977.56/x
  3. Step 3: Cross multiply
    21,205.38x = 31,813.24 × 14,977.56
  4. Step 4: Simplify right side
    21,205.38x = 476,484,710.89
  5. Step 5: Solve for x
    x = 476,484,710.89/21,205.38
  6. Step 6: Final answer
    x = 22,469.99

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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.