Home / 28,557.76-39,407.52-15,980.80

Finding the Fourth Proportional to 28,557.76, 39,407.52 and 15,980.80

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Solution

The fourth proportional to 28,557.76, 39,407.52 and 15,980.80 is: 22,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.76 : 39,407.52 = 15,980.80 : x
  2. Step 2: Convert to fraction form
    28,557.76/39,407.52 = 15,980.80/x
  3. Step 3: Cross multiply
    28,557.76x = 39,407.52 × 15,980.80
  4. Step 4: Simplify right side
    28,557.76x = 629,763,695.62
  5. Step 5: Solve for x
    x = 629,763,695.62/28,557.76
  6. Step 6: Final answer
    x = 22,052.28

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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.