Home / 15,285.22-21,103.86-9,551.38

Finding the Fourth Proportional to 15,285.22, 21,103.86 and 9,551.38

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Solution

The fourth proportional to 15,285.22, 21,103.86 and 9,551.38 is: 13,187.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.22 : 21,103.86 = 9,551.38 : x
  2. Step 2: Convert to fraction form
    15,285.22/21,103.86 = 9,551.38/x
  3. Step 3: Cross multiply
    15,285.22x = 21,103.86 × 9,551.38
  4. Step 4: Simplify right side
    15,285.22x = 201,570,986.33
  5. Step 5: Solve for x
    x = 201,570,986.33/15,285.22
  6. Step 6: Final answer
    x = 13,187.31

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Double scale
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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.