Home / 15,388.46-21,230.36-11,804.06

Finding the Fourth Proportional to 15,388.46, 21,230.36 and 11,804.06

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Solution

The fourth proportional to 15,388.46, 21,230.36 and 11,804.06 is: 16,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.46 : 21,230.36 = 11,804.06 : x
  2. Step 2: Convert to fraction form
    15,388.46/21,230.36 = 11,804.06/x
  3. Step 3: Cross multiply
    15,388.46x = 21,230.36 × 11,804.06
  4. Step 4: Simplify right side
    15,388.46x = 250,604,278.09
  5. Step 5: Solve for x
    x = 250,604,278.09/15,388.46
  6. Step 6: Final answer
    x = 16,285.21

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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.