Home / 20,573.01-28,390.70-11,141.55

Finding the Fourth Proportional to 20,573.01, 28,390.70 and 11,141.55

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Solution

The fourth proportional to 20,573.01, 28,390.70 and 11,141.55 is: 15,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.01 : 28,390.70 = 11,141.55 : x
  2. Step 2: Convert to fraction form
    20,573.01/28,390.70 = 11,141.55/x
  3. Step 3: Cross multiply
    20,573.01x = 28,390.70 × 11,141.55
  4. Step 4: Simplify right side
    20,573.01x = 316,316,347.88
  5. Step 5: Solve for x
    x = 316,316,347.88/20,573.01
  6. Step 6: Final answer
    x = 15,375.31

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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.