Home / 13,866.27-19,135.45-7,578.65

Finding the Fourth Proportional to 13,866.27, 19,135.45 and 7,578.65

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Solution

The fourth proportional to 13,866.27, 19,135.45 and 7,578.65 is: 10,458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.27 : 19,135.45 = 7,578.65 : x
  2. Step 2: Convert to fraction form
    13,866.27/19,135.45 = 7,578.65/x
  3. Step 3: Cross multiply
    13,866.27x = 19,135.45 × 7,578.65
  4. Step 4: Simplify right side
    13,866.27x = 145,020,782.47
  5. Step 5: Solve for x
    x = 145,020,782.47/13,866.27
  6. Step 6: Final answer
    x = 10,458.53

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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.