Home / 20,426.88-30,624.72-9,325.86

Finding the Fourth Proportional to 20,426.88, 30,624.72 and 9,325.86

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Solution

The fourth proportional to 20,426.88, 30,624.72 and 9,325.86 is: 13,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.88 : 30,624.72 = 9,325.86 : x
  2. Step 2: Convert to fraction form
    20,426.88/30,624.72 = 9,325.86/x
  3. Step 3: Cross multiply
    20,426.88x = 30,624.72 × 9,325.86
  4. Step 4: Simplify right side
    20,426.88x = 285,601,851.26
  5. Step 5: Solve for x
    x = 285,601,851.26/20,426.88
  6. Step 6: Final answer
    x = 13,981.67

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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.