Home / 12,210.21-16,849.82-7,174.91

Finding the Fourth Proportional to 12,210.21, 16,849.82 and 7,174.91

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Solution

The fourth proportional to 12,210.21, 16,849.82 and 7,174.91 is: 9,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.21 : 16,849.82 = 7,174.91 : x
  2. Step 2: Convert to fraction form
    12,210.21/16,849.82 = 7,174.91/x
  3. Step 3: Cross multiply
    12,210.21x = 16,849.82 × 7,174.91
  4. Step 4: Simplify right side
    12,210.21x = 120,896,002.08
  5. Step 5: Solve for x
    x = 120,896,002.08/12,210.21
  6. Step 6: Final answer
    x = 9,901.22

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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.