Home / 13,299.60-19,949.44-12,487.68

Finding the Fourth Proportional to 13,299.60, 19,949.44 and 12,487.68

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Solution

The fourth proportional to 13,299.60, 19,949.44 and 12,487.68 is: 18,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.60 : 19,949.44 = 12,487.68 : x
  2. Step 2: Convert to fraction form
    13,299.60/19,949.44 = 12,487.68/x
  3. Step 3: Cross multiply
    13,299.60x = 19,949.44 × 12,487.68
  4. Step 4: Simplify right side
    13,299.60x = 249,122,222.90
  5. Step 5: Solve for x
    x = 249,122,222.90/13,299.60
  6. Step 6: Final answer
    x = 18,731.56

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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.