Home / 13,992.78-21,015.09-11,089.74

Finding the Fourth Proportional to 13,992.78, 21,015.09 and 11,089.74

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Solution

The fourth proportional to 13,992.78, 21,015.09 and 11,089.74 is: 16,655.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.78 : 21,015.09 = 11,089.74 : x
  2. Step 2: Convert to fraction form
    13,992.78/21,015.09 = 11,089.74/x
  3. Step 3: Cross multiply
    13,992.78x = 21,015.09 × 11,089.74
  4. Step 4: Simplify right side
    13,992.78x = 233,051,884.18
  5. Step 5: Solve for x
    x = 233,051,884.18/13,992.78
  6. Step 6: Final answer
    x = 16,655.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.