Home / 14,770.70-20,384.78-8,399.28

Finding the Fourth Proportional to 14,770.70, 20,384.78 and 8,399.28

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Solution

The fourth proportional to 14,770.70, 20,384.78 and 8,399.28 is: 11,591.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,770.70 : 20,384.78 = 8,399.28 : x
  2. Step 2: Convert to fraction form
    14,770.70/20,384.78 = 8,399.28/x
  3. Step 3: Cross multiply
    14,770.70x = 20,384.78 × 8,399.28
  4. Step 4: Simplify right side
    14,770.70x = 171,217,432.96
  5. Step 5: Solve for x
    x = 171,217,432.96/14,770.70
  6. Step 6: Final answer
    x = 11,591.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.