Home / 12,669.10-19,013.38-12,018.69

Finding the Fourth Proportional to 12,669.10, 19,013.38 and 12,018.69

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Solution

The fourth proportional to 12,669.10, 19,013.38 and 12,018.69 is: 18,037.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.10 : 19,013.38 = 12,018.69 : x
  2. Step 2: Convert to fraction form
    12,669.10/19,013.38 = 12,018.69/x
  3. Step 3: Cross multiply
    12,669.10x = 19,013.38 × 12,018.69
  4. Step 4: Simplify right side
    12,669.10x = 228,515,920.07
  5. Step 5: Solve for x
    x = 228,515,920.07/12,669.10
  6. Step 6: Final answer
    x = 18,037.27

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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.