Home / 19,338.80-26,685-11,379.44

Finding the Fourth Proportional to 19,338.80, 26,685 and 11,379.44

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Solution

The fourth proportional to 19,338.80, 26,685 and 11,379.44 is: 15,702.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.80 : 26,685 = 11,379.44 : x
  2. Step 2: Convert to fraction form
    19,338.80/26,685 = 11,379.44/x
  3. Step 3: Cross multiply
    19,338.80x = 26,685 × 11,379.44
  4. Step 4: Simplify right side
    19,338.80x = 303,660,356.40
  5. Step 5: Solve for x
    x = 303,660,356.40/19,338.80
  6. Step 6: Final answer
    x = 15,702.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.