Home / 19,037.88-28,563.12-12,009.78

Finding the Fourth Proportional to 19,037.88, 28,563.12 and 12,009.78

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Solution

The fourth proportional to 19,037.88, 28,563.12 and 12,009.78 is: 18,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,037.88 : 28,563.12 = 12,009.78 : x
  2. Step 2: Convert to fraction form
    19,037.88/28,563.12 = 12,009.78/x
  3. Step 3: Cross multiply
    19,037.88x = 28,563.12 × 12,009.78
  4. Step 4: Simplify right side
    19,037.88x = 343,036,787.31
  5. Step 5: Solve for x
    x = 343,036,787.31/19,037.88
  6. Step 6: Final answer
    x = 18,018.64

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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.