Home / 20,245.07-30,367.59-10,378.05

Finding the Fourth Proportional to 20,245.07, 30,367.59 and 10,378.05

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Solution

The fourth proportional to 20,245.07, 30,367.59 and 10,378.05 is: 15,567.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.07 : 30,367.59 = 10,378.05 : x
  2. Step 2: Convert to fraction form
    20,245.07/30,367.59 = 10,378.05/x
  3. Step 3: Cross multiply
    20,245.07x = 30,367.59 × 10,378.05
  4. Step 4: Simplify right side
    20,245.07x = 315,156,367.40
  5. Step 5: Solve for x
    x = 315,156,367.40/20,245.07
  6. Step 6: Final answer
    x = 15,567.07

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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.