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Finding the Fourth Proportional to 20,426.40, 30,588.40 and 16,330.40

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Solution

The fourth proportional to 20,426.40, 30,588.40 and 16,330.40 is: 24,454.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.40 : 30,588.40 = 16,330.40 : x
  2. Step 2: Convert to fraction form
    20,426.40/30,588.40 = 16,330.40/x
  3. Step 3: Cross multiply
    20,426.40x = 30,588.40 × 16,330.40
  4. Step 4: Simplify right side
    20,426.40x = 499,520,807.36
  5. Step 5: Solve for x
    x = 499,520,807.36/20,426.40
  6. Step 6: Final answer
    x = 24,454.67

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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.