Home / 15,450.80-21,318.53-10,424.34

Finding the Fourth Proportional to 15,450.80, 21,318.53 and 10,424.34

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Solution

The fourth proportional to 15,450.80, 21,318.53 and 10,424.34 is: 14,383.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.80 : 21,318.53 = 10,424.34 : x
  2. Step 2: Convert to fraction form
    15,450.80/21,318.53 = 10,424.34/x
  3. Step 3: Cross multiply
    15,450.80x = 21,318.53 × 10,424.34
  4. Step 4: Simplify right side
    15,450.80x = 222,231,552.90
  5. Step 5: Solve for x
    x = 222,231,552.90/15,450.80
  6. Step 6: Final answer
    x = 14,383.18

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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.