Home / 20,670.08-28,524.48-11,238.80

Finding the Fourth Proportional to 20,670.08, 28,524.48 and 11,238.80

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Solution

The fourth proportional to 20,670.08, 28,524.48 and 11,238.80 is: 15,509.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.08 : 28,524.48 = 11,238.80 : x
  2. Step 2: Convert to fraction form
    20,670.08/28,524.48 = 11,238.80/x
  3. Step 3: Cross multiply
    20,670.08x = 28,524.48 × 11,238.80
  4. Step 4: Simplify right side
    20,670.08x = 320,580,925.82
  5. Step 5: Solve for x
    x = 320,580,925.82/20,670.08
  6. Step 6: Final answer
    x = 15,509.42

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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.