Home / 16,213.42-22,374.12-9,139.78

Finding the Fourth Proportional to 16,213.42, 22,374.12 and 9,139.78

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Solution

The fourth proportional to 16,213.42, 22,374.12 and 9,139.78 is: 12,612.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,213.42 : 22,374.12 = 9,139.78 : x
  2. Step 2: Convert to fraction form
    16,213.42/22,374.12 = 9,139.78/x
  3. Step 3: Cross multiply
    16,213.42x = 22,374.12 × 9,139.78
  4. Step 4: Simplify right side
    16,213.42x = 204,494,534.49
  5. Step 5: Solve for x
    x = 204,494,534.49/16,213.42
  6. Step 6: Final answer
    x = 12,612.67

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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.