Home / 12,335.36-18,507.68-7,408.42

Finding the Fourth Proportional to 12,335.36, 18,507.68 and 7,408.42

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Solution

The fourth proportional to 12,335.36, 18,507.68 and 7,408.42 is: 11,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,335.36 : 18,507.68 = 7,408.42 : x
  2. Step 2: Convert to fraction form
    12,335.36/18,507.68 = 7,408.42/x
  3. Step 3: Cross multiply
    12,335.36x = 18,507.68 × 7,408.42
  4. Step 4: Simplify right side
    12,335.36x = 137,112,666.67
  5. Step 5: Solve for x
    x = 137,112,666.67/12,335.36
  6. Step 6: Final answer
    x = 11,115.42

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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.