Home / 20,623.07-28,459.86-11,191.64

Finding the Fourth Proportional to 20,623.07, 28,459.86 and 11,191.64

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Solution

The fourth proportional to 20,623.07, 28,459.86 and 11,191.64 is: 15,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.07 : 28,459.86 = 11,191.64 : x
  2. Step 2: Convert to fraction form
    20,623.07/28,459.86 = 11,191.64/x
  3. Step 3: Cross multiply
    20,623.07x = 28,459.86 × 11,191.64
  4. Step 4: Simplify right side
    20,623.07x = 318,512,365.27
  5. Step 5: Solve for x
    x = 318,512,365.27/20,623.07
  6. Step 6: Final answer
    x = 15,444.47

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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.