Home / 20,910.57-28,854.66-12,411.24

Finding the Fourth Proportional to 20,910.57, 28,854.66 and 12,411.24

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Solution

The fourth proportional to 20,910.57, 28,854.66 and 12,411.24 is: 17,126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.57 : 28,854.66 = 12,411.24 : x
  2. Step 2: Convert to fraction form
    20,910.57/28,854.66 = 12,411.24/x
  3. Step 3: Cross multiply
    20,910.57x = 28,854.66 × 12,411.24
  4. Step 4: Simplify right side
    20,910.57x = 358,122,048.72
  5. Step 5: Solve for x
    x = 358,122,048.72/20,910.57
  6. Step 6: Final answer
    x = 17,126.37

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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.