Home / 12,914.81-19,370.40-4,148.59

Finding the Fourth Proportional to 12,914.81, 19,370.40 and 4,148.59

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Solution

The fourth proportional to 12,914.81, 19,370.40 and 4,148.59 is: 6,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.81 : 19,370.40 = 4,148.59 : x
  2. Step 2: Convert to fraction form
    12,914.81/19,370.40 = 4,148.59/x
  3. Step 3: Cross multiply
    12,914.81x = 19,370.40 × 4,148.59
  4. Step 4: Simplify right side
    12,914.81x = 80,359,847.74
  5. Step 5: Solve for x
    x = 80,359,847.74/12,914.81
  6. Step 6: Final answer
    x = 6,222.30

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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.