Home / 28,548.16-39,398.56-15,972.80

Finding the Fourth Proportional to 28,548.16, 39,398.56 and 15,972.80

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Solution

The fourth proportional to 28,548.16, 39,398.56 and 15,972.80 is: 22,043.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,548.16 : 39,398.56 = 15,972.80 : x
  2. Step 2: Convert to fraction form
    28,548.16/39,398.56 = 15,972.80/x
  3. Step 3: Cross multiply
    28,548.16x = 39,398.56 × 15,972.80
  4. Step 4: Simplify right side
    28,548.16x = 629,305,319.17
  5. Step 5: Solve for x
    x = 629,305,319.17/28,548.16
  6. Step 6: Final answer
    x = 22,043.64

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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.