Home / 21,205.37-31,813.23-14,977.55

Finding the Fourth Proportional to 21,205.37, 31,813.23 and 14,977.55

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Solution

The fourth proportional to 21,205.37, 31,813.23 and 14,977.55 is: 22,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.37 : 31,813.23 = 14,977.55 : x
  2. Step 2: Convert to fraction form
    21,205.37/31,813.23 = 14,977.55/x
  3. Step 3: Cross multiply
    21,205.37x = 31,813.23 × 14,977.55
  4. Step 4: Simplify right side
    21,205.37x = 476,484,242.99
  5. Step 5: Solve for x
    x = 476,484,242.99/21,205.37
  6. Step 6: Final answer
    x = 22,469.98

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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.