Home / 20,320.86-30,485.88-10,960.68

Finding the Fourth Proportional to 20,320.86, 30,485.88 and 10,960.68

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Solution

The fourth proportional to 20,320.86, 30,485.88 and 10,960.68 is: 16,443.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.86 : 30,485.88 = 10,960.68 : x
  2. Step 2: Convert to fraction form
    20,320.86/30,485.88 = 10,960.68/x
  3. Step 3: Cross multiply
    20,320.86x = 30,485.88 × 10,960.68
  4. Step 4: Simplify right side
    20,320.86x = 334,145,975.20
  5. Step 5: Solve for x
    x = 334,145,975.20/20,320.86
  6. Step 6: Final answer
    x = 16,443.50

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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.