Home / 28,555.36-39,406.92-15,980.08

Finding the Fourth Proportional to 28,555.36, 39,406.92 and 15,980.08

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Solution

The fourth proportional to 28,555.36, 39,406.92 and 15,980.08 is: 22,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.36 : 39,406.92 = 15,980.08 : x
  2. Step 2: Convert to fraction form
    28,555.36/39,406.92 = 15,980.08/x
  3. Step 3: Cross multiply
    28,555.36x = 39,406.92 × 15,980.08
  4. Step 4: Simplify right side
    28,555.36x = 629,725,734.15
  5. Step 5: Solve for x
    x = 629,725,734.15/28,555.36
  6. Step 6: Final answer
    x = 22,052.80

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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.