Home / 12,289.12-16,954.72-7,249.91

Finding the Fourth Proportional to 12,289.12, 16,954.72 and 7,249.91

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Solution

The fourth proportional to 12,289.12, 16,954.72 and 7,249.91 is: 10,002.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.12 : 16,954.72 = 7,249.91 : x
  2. Step 2: Convert to fraction form
    12,289.12/16,954.72 = 7,249.91/x
  3. Step 3: Cross multiply
    12,289.12x = 16,954.72 × 7,249.91
  4. Step 4: Simplify right side
    12,289.12x = 122,920,091.18
  5. Step 5: Solve for x
    x = 122,920,091.18/12,289.12
  6. Step 6: Final answer
    x = 10,002.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.