Home / 19,379.78-26,737.20-12,669.26

Finding the Fourth Proportional to 19,379.78, 26,737.20 and 12,669.26

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Solution

The fourth proportional to 19,379.78, 26,737.20 and 12,669.26 is: 17,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.78 : 26,737.20 = 12,669.26 : x
  2. Step 2: Convert to fraction form
    19,379.78/26,737.20 = 12,669.26/x
  3. Step 3: Cross multiply
    19,379.78x = 26,737.20 × 12,669.26
  4. Step 4: Simplify right side
    19,379.78x = 338,740,538.47
  5. Step 5: Solve for x
    x = 338,740,538.47/19,379.78
  6. Step 6: Final answer
    x = 17,479.07

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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.