Home / 15,628.88-21,565.94-12,450.26

Finding the Fourth Proportional to 15,628.88, 21,565.94 and 12,450.26

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Solution

The fourth proportional to 15,628.88, 21,565.94 and 12,450.26 is: 17,179.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.88 : 21,565.94 = 12,450.26 : x
  2. Step 2: Convert to fraction form
    15,628.88/21,565.94 = 12,450.26/x
  3. Step 3: Cross multiply
    15,628.88x = 21,565.94 × 12,450.26
  4. Step 4: Simplify right side
    15,628.88x = 268,501,551.81
  5. Step 5: Solve for x
    x = 268,501,551.81/15,628.88
  6. Step 6: Final answer
    x = 17,179.83

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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.