Home / 14,415.12-21,661.56-12,609.36

Finding the Fourth Proportional to 14,415.12, 21,661.56 and 12,609.36

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Solution

The fourth proportional to 14,415.12, 21,661.56 and 12,609.36 is: 18,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.12 : 21,661.56 = 12,609.36 : x
  2. Step 2: Convert to fraction form
    14,415.12/21,661.56 = 12,609.36/x
  3. Step 3: Cross multiply
    14,415.12x = 21,661.56 × 12,609.36
  4. Step 4: Simplify right side
    14,415.12x = 273,138,408.20
  5. Step 5: Solve for x
    x = 273,138,408.20/14,415.12
  6. Step 6: Final answer
    x = 18,948.05

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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.