Home / 22,736.80-31,379.08-12,665.28

Finding the Fourth Proportional to 22,736.80, 31,379.08 and 12,665.28

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Solution

The fourth proportional to 22,736.80, 31,379.08 and 12,665.28 is: 17,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,736.80 : 31,379.08 = 12,665.28 : x
  2. Step 2: Convert to fraction form
    22,736.80/31,379.08 = 12,665.28/x
  3. Step 3: Cross multiply
    22,736.80x = 31,379.08 × 12,665.28
  4. Step 4: Simplify right side
    22,736.80x = 397,424,834.34
  5. Step 5: Solve for x
    x = 397,424,834.34/22,736.80
  6. Step 6: Final answer
    x = 17,479.37

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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.