Home / 28,100.88-38,781.04-15,525.64

Finding the Fourth Proportional to 28,100.88, 38,781.04 and 15,525.64

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Solution

The fourth proportional to 28,100.88, 38,781.04 and 15,525.64 is: 21,426.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.88 : 38,781.04 = 15,525.64 : x
  2. Step 2: Convert to fraction form
    28,100.88/38,781.04 = 15,525.64/x
  3. Step 3: Cross multiply
    28,100.88x = 38,781.04 × 15,525.64
  4. Step 4: Simplify right side
    28,100.88x = 602,100,465.87
  5. Step 5: Solve for x
    x = 602,100,465.87/28,100.88
  6. Step 6: Final answer
    x = 21,426.39

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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.