Home / 13,285.89-18,335.82-9,922.86

Finding the Fourth Proportional to 13,285.89, 18,335.82 and 9,922.86

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Solution

The fourth proportional to 13,285.89, 18,335.82 and 9,922.86 is: 13,694.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.89 : 18,335.82 = 9,922.86 : x
  2. Step 2: Convert to fraction form
    13,285.89/18,335.82 = 9,922.86/x
  3. Step 3: Cross multiply
    13,285.89x = 18,335.82 × 9,922.86
  4. Step 4: Simplify right side
    13,285.89x = 181,943,774.85
  5. Step 5: Solve for x
    x = 181,943,774.85/13,285.89
  6. Step 6: Final answer
    x = 13,694.52

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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.