Home / 12,891.81-19,338.93-4,124.64

Finding the Fourth Proportional to 12,891.81, 19,338.93 and 4,124.64

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Solution

The fourth proportional to 12,891.81, 19,338.93 and 4,124.64 is: 6,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.81 : 19,338.93 = 4,124.64 : x
  2. Step 2: Convert to fraction form
    12,891.81/19,338.93 = 4,124.64/x
  3. Step 3: Cross multiply
    12,891.81x = 19,338.93 × 4,124.64
  4. Step 4: Simplify right side
    12,891.81x = 79,766,124.24
  5. Step 5: Solve for x
    x = 79,766,124.24/12,891.81
  6. Step 6: Final answer
    x = 6,187.35

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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.