Home / 20,554.37-28,365.10-11,122.93

Finding the Fourth Proportional to 20,554.37, 28,365.10 and 11,122.93

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Solution

The fourth proportional to 20,554.37, 28,365.10 and 11,122.93 is: 15,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.37 : 28,365.10 = 11,122.93 : x
  2. Step 2: Convert to fraction form
    20,554.37/28,365.10 = 11,122.93/x
  3. Step 3: Cross multiply
    20,554.37x = 28,365.10 × 11,122.93
  4. Step 4: Simplify right side
    20,554.37x = 315,502,824.30
  5. Step 5: Solve for x
    x = 315,502,824.30/20,554.37
  6. Step 6: Final answer
    x = 15,349.68

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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.