Home / 12,813.40-19,208.42-4,488.89

Finding the Fourth Proportional to 12,813.40, 19,208.42 and 4,488.89

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Solution

The fourth proportional to 12,813.40, 19,208.42 and 4,488.89 is: 6,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.40 : 19,208.42 = 4,488.89 : x
  2. Step 2: Convert to fraction form
    12,813.40/19,208.42 = 4,488.89/x
  3. Step 3: Cross multiply
    12,813.40x = 19,208.42 × 4,488.89
  4. Step 4: Simplify right side
    12,813.40x = 86,224,462.01
  5. Step 5: Solve for x
    x = 86,224,462.01/12,813.40
  6. Step 6: Final answer
    x = 6,729.24

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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.