Home / 20,352.83-28,083.62-11,400.71

Finding the Fourth Proportional to 20,352.83, 28,083.62 and 11,400.71

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Solution

The fourth proportional to 20,352.83, 28,083.62 and 11,400.71 is: 15,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.83 : 28,083.62 = 11,400.71 : x
  2. Step 2: Convert to fraction form
    20,352.83/28,083.62 = 11,400.71/x
  3. Step 3: Cross multiply
    20,352.83x = 28,083.62 × 11,400.71
  4. Step 4: Simplify right side
    20,352.83x = 320,173,009.95
  5. Step 5: Solve for x
    x = 320,173,009.95/20,352.83
  6. Step 6: Final answer
    x = 15,731.13

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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.