Home / 28,555.04-39,406.84-15,979.76

Finding the Fourth Proportional to 28,555.04, 39,406.84 and 15,979.76

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Solution

The fourth proportional to 28,555.04, 39,406.84 and 15,979.76 is: 22,052.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.04 : 39,406.84 = 15,979.76 : x
  2. Step 2: Convert to fraction form
    28,555.04/39,406.84 = 15,979.76/x
  3. Step 3: Cross multiply
    28,555.04x = 39,406.84 × 15,979.76
  4. Step 4: Simplify right side
    28,555.04x = 629,711,845.56
  5. Step 5: Solve for x
    x = 629,711,845.56/28,555.04
  6. Step 6: Final answer
    x = 22,052.56

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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.