Home / 20,795.79-28,719.16-13,245.50

Finding the Fourth Proportional to 20,795.79, 28,719.16 and 13,245.50

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Solution

The fourth proportional to 20,795.79, 28,719.16 and 13,245.50 is: 18,292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.79 : 28,719.16 = 13,245.50 : x
  2. Step 2: Convert to fraction form
    20,795.79/28,719.16 = 13,245.50/x
  3. Step 3: Cross multiply
    20,795.79x = 28,719.16 × 13,245.50
  4. Step 4: Simplify right side
    20,795.79x = 380,399,591.69
  5. Step 5: Solve for x
    x = 380,399,591.69/20,795.79
  6. Step 6: Final answer
    x = 18,292.15

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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.