Home / 12,909.72-19,364.58-4,145.34

Finding the Fourth Proportional to 12,909.72, 19,364.58 and 4,145.34

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Solution

The fourth proportional to 12,909.72, 19,364.58 and 4,145.34 is: 6,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.72 : 19,364.58 = 4,145.34 : x
  2. Step 2: Convert to fraction form
    12,909.72/19,364.58 = 4,145.34/x
  3. Step 3: Cross multiply
    12,909.72x = 19,364.58 × 4,145.34
  4. Step 4: Simplify right side
    12,909.72x = 80,272,768.06
  5. Step 5: Solve for x
    x = 80,272,768.06/12,909.72
  6. Step 6: Final answer
    x = 6,218.01

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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.