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Finding the Fourth Proportional to 13,037.80, 17,989.38 and 7,734.32

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Solution

The fourth proportional to 13,037.80, 17,989.38 and 7,734.32 is: 10,671.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,037.80 : 17,989.38 = 7,734.32 : x
  2. Step 2: Convert to fraction form
    13,037.80/17,989.38 = 7,734.32/x
  3. Step 3: Cross multiply
    13,037.80x = 17,989.38 × 7,734.32
  4. Step 4: Simplify right side
    13,037.80x = 139,135,621.52
  5. Step 5: Solve for x
    x = 139,135,621.52/13,037.80
  6. Step 6: Final answer
    x = 10,671.71

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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.