Home / 20,303.39-30,434.34-11,519.75

Finding the Fourth Proportional to 20,303.39, 30,434.34 and 11,519.75

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Solution

The fourth proportional to 20,303.39, 30,434.34 and 11,519.75 is: 17,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.39 : 30,434.34 = 11,519.75 : x
  2. Step 2: Convert to fraction form
    20,303.39/30,434.34 = 11,519.75/x
  3. Step 3: Cross multiply
    20,303.39x = 30,434.34 × 11,519.75
  4. Step 4: Simplify right side
    20,303.39x = 350,595,988.22
  5. Step 5: Solve for x
    x = 350,595,988.22/20,303.39
  6. Step 6: Final answer
    x = 17,267.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.