Home / 12,813.39-19,219.40-9,049.70

Finding the Fourth Proportional to 12,813.39, 19,219.40 and 9,049.70

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Solution

The fourth proportional to 12,813.39, 19,219.40 and 9,049.70 is: 13,574.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.39 : 19,219.40 = 9,049.70 : x
  2. Step 2: Convert to fraction form
    12,813.39/19,219.40 = 9,049.70/x
  3. Step 3: Cross multiply
    12,813.39x = 19,219.40 × 9,049.70
  4. Step 4: Simplify right side
    12,813.39x = 173,929,812.31
  5. Step 5: Solve for x
    x = 173,929,812.31/12,813.39
  6. Step 6: Final answer
    x = 13,574.07

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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.