Home / 28,120.64-38,805.04-15,542.96

Finding the Fourth Proportional to 28,120.64, 38,805.04 and 15,542.96

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Solution

The fourth proportional to 28,120.64, 38,805.04 and 15,542.96 is: 21,448.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.64 : 38,805.04 = 15,542.96 : x
  2. Step 2: Convert to fraction form
    28,120.64/38,805.04 = 15,542.96/x
  3. Step 3: Cross multiply
    28,120.64x = 38,805.04 × 15,542.96
  4. Step 4: Simplify right side
    28,120.64x = 603,145,184.52
  5. Step 5: Solve for x
    x = 603,145,184.52/28,120.64
  6. Step 6: Final answer
    x = 21,448.49

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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.