Home / 13,037.94-18,007.16-8,781.62

Finding the Fourth Proportional to 13,037.94, 18,007.16 and 8,781.62

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Solution

The fourth proportional to 13,037.94, 18,007.16 and 8,781.62 is: 12,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,037.94 : 18,007.16 = 8,781.62 : x
  2. Step 2: Convert to fraction form
    13,037.94/18,007.16 = 8,781.62/x
  3. Step 3: Cross multiply
    13,037.94x = 18,007.16 × 8,781.62
  4. Step 4: Simplify right side
    13,037.94x = 158,131,902.46
  5. Step 5: Solve for x
    x = 158,131,902.46/13,037.94
  6. Step 6: Final answer
    x = 12,128.60

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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.