Home / 20,655.72-28,504.26-11,224.08

Finding the Fourth Proportional to 20,655.72, 28,504.26 and 11,224.08

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Solution

The fourth proportional to 20,655.72, 28,504.26 and 11,224.08 is: 15,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.72 : 28,504.26 = 11,224.08 : x
  2. Step 2: Convert to fraction form
    20,655.72/28,504.26 = 11,224.08/x
  3. Step 3: Cross multiply
    20,655.72x = 28,504.26 × 11,224.08
  4. Step 4: Simplify right side
    20,655.72x = 319,934,094.58
  5. Step 5: Solve for x
    x = 319,934,094.58/20,655.72
  6. Step 6: Final answer
    x = 15,488.89

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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.