Home / 12,170.05-16,783.42-9,337.55

Finding the Fourth Proportional to 12,170.05, 16,783.42 and 9,337.55

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Solution

The fourth proportional to 12,170.05, 16,783.42 and 9,337.55 is: 12,877.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.05 : 16,783.42 = 9,337.55 : x
  2. Step 2: Convert to fraction form
    12,170.05/16,783.42 = 9,337.55/x
  3. Step 3: Cross multiply
    12,170.05x = 16,783.42 × 9,337.55
  4. Step 4: Simplify right side
    12,170.05x = 156,715,894.28
  5. Step 5: Solve for x
    x = 156,715,894.28/12,170.05
  6. Step 6: Final answer
    x = 12,877.18

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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.