Home / 20,311.65-28,033.29-12,356.37

Finding the Fourth Proportional to 20,311.65, 28,033.29 and 12,356.37

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Solution

The fourth proportional to 20,311.65, 28,033.29 and 12,356.37 is: 17,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.65 : 28,033.29 = 12,356.37 : x
  2. Step 2: Convert to fraction form
    20,311.65/28,033.29 = 12,356.37/x
  3. Step 3: Cross multiply
    20,311.65x = 28,033.29 × 12,356.37
  4. Step 4: Simplify right side
    20,311.65x = 346,389,703.56
  5. Step 5: Solve for x
    x = 346,389,703.56/20,311.65
  6. Step 6: Final answer
    x = 17,053.75

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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.