Home / 12,945.22-19,408.83-6,607.80

Finding the Fourth Proportional to 12,945.22, 19,408.83 and 6,607.80

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Solution

The fourth proportional to 12,945.22, 19,408.83 and 6,607.80 is: 9,907.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.22 : 19,408.83 = 6,607.80 : x
  2. Step 2: Convert to fraction form
    12,945.22/19,408.83 = 6,607.80/x
  3. Step 3: Cross multiply
    12,945.22x = 19,408.83 × 6,607.80
  4. Step 4: Simplify right side
    12,945.22x = 128,249,666.87
  5. Step 5: Solve for x
    x = 128,249,666.87/12,945.22
  6. Step 6: Final answer
    x = 9,907.11

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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.