Home / 15,529.50-21,429.63-8,815.25

Finding the Fourth Proportional to 15,529.50, 21,429.63 and 8,815.25

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Solution

The fourth proportional to 15,529.50, 21,429.63 and 8,815.25 is: 12,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.50 : 21,429.63 = 8,815.25 : x
  2. Step 2: Convert to fraction form
    15,529.50/21,429.63 = 8,815.25/x
  3. Step 3: Cross multiply
    15,529.50x = 21,429.63 × 8,815.25
  4. Step 4: Simplify right side
    15,529.50x = 188,907,438.71
  5. Step 5: Solve for x
    x = 188,907,438.71/15,529.50
  6. Step 6: Final answer
    x = 12,164.43

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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.