Home / 20,584.77-28,407.78-12,516.11

Finding the Fourth Proportional to 20,584.77, 28,407.78 and 12,516.11

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Solution

The fourth proportional to 20,584.77, 28,407.78 and 12,516.11 is: 17,272.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.77 : 28,407.78 = 12,516.11 : x
  2. Step 2: Convert to fraction form
    20,584.77/28,407.78 = 12,516.11/x
  3. Step 3: Cross multiply
    20,584.77x = 28,407.78 × 12,516.11
  4. Step 4: Simplify right side
    20,584.77x = 355,554,899.34
  5. Step 5: Solve for x
    x = 355,554,899.34/20,584.77
  6. Step 6: Final answer
    x = 17,272.72

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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.