Home / 20,459.56-28,234.23-11,507.08

Finding the Fourth Proportional to 20,459.56, 28,234.23 and 11,507.08

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Solution

The fourth proportional to 20,459.56, 28,234.23 and 11,507.08 is: 15,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.56 : 28,234.23 = 11,507.08 : x
  2. Step 2: Convert to fraction form
    20,459.56/28,234.23 = 11,507.08/x
  3. Step 3: Cross multiply
    20,459.56x = 28,234.23 × 11,507.08
  4. Step 4: Simplify right side
    20,459.56x = 324,893,543.35
  5. Step 5: Solve for x
    x = 324,893,543.35/20,459.56
  6. Step 6: Final answer
    x = 15,879.79

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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.