Home / 15,450.81-21,309.42-9,478.27

Finding the Fourth Proportional to 15,450.81, 21,309.42 and 9,478.27

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Solution

The fourth proportional to 15,450.81, 21,309.42 and 9,478.27 is: 13,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.81 : 21,309.42 = 9,478.27 : x
  2. Step 2: Convert to fraction form
    15,450.81/21,309.42 = 9,478.27/x
  3. Step 3: Cross multiply
    15,450.81x = 21,309.42 × 9,478.27
  4. Step 4: Simplify right side
    15,450.81x = 201,976,436.30
  5. Step 5: Solve for x
    x = 201,976,436.30/15,450.81
  6. Step 6: Final answer
    x = 13,072.22

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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.