Home / 20,397.15-28,133.47-17,704.39

Finding the Fourth Proportional to 20,397.15, 28,133.47 and 17,704.39

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Solution

The fourth proportional to 20,397.15, 28,133.47 and 17,704.39 is: 24,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.15 : 28,133.47 = 17,704.39 : x
  2. Step 2: Convert to fraction form
    20,397.15/28,133.47 = 17,704.39/x
  3. Step 3: Cross multiply
    20,397.15x = 28,133.47 × 17,704.39
  4. Step 4: Simplify right side
    20,397.15x = 498,085,924.93
  5. Step 5: Solve for x
    x = 498,085,924.93/20,397.15
  6. Step 6: Final answer
    x = 24,419.39

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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.