Home / 20,982.36-28,893.16-20,516.68

Finding the Fourth Proportional to 20,982.36, 28,893.16 and 20,516.68

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Solution

The fourth proportional to 20,982.36, 28,893.16 and 20,516.68 is: 28,251.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.36 : 28,893.16 = 20,516.68 : x
  2. Step 2: Convert to fraction form
    20,982.36/28,893.16 = 20,516.68/x
  3. Step 3: Cross multiply
    20,982.36x = 28,893.16 × 20,516.68
  4. Step 4: Simplify right side
    20,982.36x = 592,791,717.91
  5. Step 5: Solve for x
    x = 592,791,717.91/20,982.36
  6. Step 6: Final answer
    x = 28,251.91

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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.