Home / 14,135.09-21,174.35-8,509.64

Finding the Fourth Proportional to 14,135.09, 21,174.35 and 8,509.64

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Solution

The fourth proportional to 14,135.09, 21,174.35 and 8,509.64 is: 12,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.09 : 21,174.35 = 8,509.64 : x
  2. Step 2: Convert to fraction form
    14,135.09/21,174.35 = 8,509.64/x
  3. Step 3: Cross multiply
    14,135.09x = 21,174.35 × 8,509.64
  4. Step 4: Simplify right side
    14,135.09x = 180,185,947.31
  5. Step 5: Solve for x
    x = 180,185,947.31/14,135.09
  6. Step 6: Final answer
    x = 12,747.43

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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.