Home / 20,630.22-28,467.36-11,555.93

Finding the Fourth Proportional to 20,630.22, 28,467.36 and 11,555.93

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Solution

The fourth proportional to 20,630.22, 28,467.36 and 11,555.93 is: 15,945.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.22 : 28,467.36 = 11,555.93 : x
  2. Step 2: Convert to fraction form
    20,630.22/28,467.36 = 11,555.93/x
  3. Step 3: Cross multiply
    20,630.22x = 28,467.36 × 11,555.93
  4. Step 4: Simplify right side
    20,630.22x = 328,966,677.11
  5. Step 5: Solve for x
    x = 328,966,677.11/20,630.22
  6. Step 6: Final answer
    x = 15,945.86

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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.