Home / 12,871.12-19,309.60-4,106.56

Finding the Fourth Proportional to 12,871.12, 19,309.60 and 4,106.56

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Solution

The fourth proportional to 12,871.12, 19,309.60 and 4,106.56 is: 6,160.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.12 : 19,309.60 = 4,106.56 : x
  2. Step 2: Convert to fraction form
    12,871.12/19,309.60 = 4,106.56/x
  3. Step 3: Cross multiply
    12,871.12x = 19,309.60 × 4,106.56
  4. Step 4: Simplify right side
    12,871.12x = 79,296,030.98
  5. Step 5: Solve for x
    x = 79,296,030.98/12,871.12
  6. Step 6: Final answer
    x = 6,160.77

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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.