Home / 19,015.20-28,537.56-12,439.56

Finding the Fourth Proportional to 19,015.20, 28,537.56 and 12,439.56

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Solution

The fourth proportional to 19,015.20, 28,537.56 and 12,439.56 is: 18,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.20 : 28,537.56 = 12,439.56 : x
  2. Step 2: Convert to fraction form
    19,015.20/28,537.56 = 12,439.56/x
  3. Step 3: Cross multiply
    19,015.20x = 28,537.56 × 12,439.56
  4. Step 4: Simplify right side
    19,015.20x = 354,994,689.87
  5. Step 5: Solve for x
    x = 354,994,689.87/19,015.20
  6. Step 6: Final answer
    x = 18,669.00

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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.