Home / 15,816.06-21,829.50-13,160.88

Finding the Fourth Proportional to 15,816.06, 21,829.50 and 13,160.88

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Solution

The fourth proportional to 15,816.06, 21,829.50 and 13,160.88 is: 18,164.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.06 : 21,829.50 = 13,160.88 : x
  2. Step 2: Convert to fraction form
    15,816.06/21,829.50 = 13,160.88/x
  3. Step 3: Cross multiply
    15,816.06x = 21,829.50 × 13,160.88
  4. Step 4: Simplify right side
    15,816.06x = 287,295,429.96
  5. Step 5: Solve for x
    x = 287,295,429.96/15,816.06
  6. Step 6: Final answer
    x = 18,164.79

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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.