Home / 15,379.48-21,222.56-9,090.64

Finding the Fourth Proportional to 15,379.48, 21,222.56 and 9,090.64

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Solution

The fourth proportional to 15,379.48, 21,222.56 and 9,090.64 is: 12,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.48 : 21,222.56 = 9,090.64 : x
  2. Step 2: Convert to fraction form
    15,379.48/21,222.56 = 9,090.64/x
  3. Step 3: Cross multiply
    15,379.48x = 21,222.56 × 9,090.64
  4. Step 4: Simplify right side
    15,379.48x = 192,926,652.84
  5. Step 5: Solve for x
    x = 192,926,652.84/15,379.48
  6. Step 6: Final answer
    x = 12,544.42

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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.