Home / 12,691.34-19,037.14-5,671.72

Finding the Fourth Proportional to 12,691.34, 19,037.14 and 5,671.72

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Solution

The fourth proportional to 12,691.34, 19,037.14 and 5,671.72 is: 8,507.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.34 : 19,037.14 = 5,671.72 : x
  2. Step 2: Convert to fraction form
    12,691.34/19,037.14 = 5,671.72/x
  3. Step 3: Cross multiply
    12,691.34x = 19,037.14 × 5,671.72
  4. Step 4: Simplify right side
    12,691.34x = 107,973,327.68
  5. Step 5: Solve for x
    x = 107,973,327.68/12,691.34
  6. Step 6: Final answer
    x = 8,507.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.