Home / 20,681.08-28,539.06-11,249.66

Finding the Fourth Proportional to 20,681.08, 28,539.06 and 11,249.66

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Solution

The fourth proportional to 20,681.08, 28,539.06 and 11,249.66 is: 15,524.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.08 : 28,539.06 = 11,249.66 : x
  2. Step 2: Convert to fraction form
    20,681.08/28,539.06 = 11,249.66/x
  3. Step 3: Cross multiply
    20,681.08x = 28,539.06 × 11,249.66
  4. Step 4: Simplify right side
    20,681.08x = 321,054,721.72
  5. Step 5: Solve for x
    x = 321,054,721.72/20,681.08
  6. Step 6: Final answer
    x = 15,524.08

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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.