Home / 20,514.51-28,295.96-12,560.66

Finding the Fourth Proportional to 20,514.51, 28,295.96 and 12,560.66

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Solution

The fourth proportional to 20,514.51, 28,295.96 and 12,560.66 is: 17,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.51 : 28,295.96 = 12,560.66 : x
  2. Step 2: Convert to fraction form
    20,514.51/28,295.96 = 12,560.66/x
  3. Step 3: Cross multiply
    20,514.51x = 28,295.96 × 12,560.66
  4. Step 4: Simplify right side
    20,514.51x = 355,415,791.45
  5. Step 5: Solve for x
    x = 355,415,791.45/20,514.51
  6. Step 6: Final answer
    x = 17,325.10

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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.