Home / 20,216.20-27,895.10-12,658.84

Finding the Fourth Proportional to 20,216.20, 27,895.10 and 12,658.84

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Solution

The fourth proportional to 20,216.20, 27,895.10 and 12,658.84 is: 17,467.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.20 : 27,895.10 = 12,658.84 : x
  2. Step 2: Convert to fraction form
    20,216.20/27,895.10 = 12,658.84/x
  3. Step 3: Cross multiply
    20,216.20x = 27,895.10 × 12,658.84
  4. Step 4: Simplify right side
    20,216.20x = 353,119,607.68
  5. Step 5: Solve for x
    x = 353,119,607.68/20,216.20
  6. Step 6: Final answer
    x = 17,467.16

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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.