Home / 13,137.30-19,673.55-8,730.90

Finding the Fourth Proportional to 13,137.30, 19,673.55 and 8,730.90

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Solution

The fourth proportional to 13,137.30, 19,673.55 and 8,730.90 is: 13,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.30 : 19,673.55 = 8,730.90 : x
  2. Step 2: Convert to fraction form
    13,137.30/19,673.55 = 8,730.90/x
  3. Step 3: Cross multiply
    13,137.30x = 19,673.55 × 8,730.90
  4. Step 4: Simplify right side
    13,137.30x = 171,767,797.70
  5. Step 5: Solve for x
    x = 171,767,797.70/13,137.30
  6. Step 6: Final answer
    x = 13,074.82

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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.