Home / 21,911.04-30,235.68-12,477.84

Finding the Fourth Proportional to 21,911.04, 30,235.68 and 12,477.84

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Solution

The fourth proportional to 21,911.04, 30,235.68 and 12,477.84 is: 17,218.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.04 : 30,235.68 = 12,477.84 : x
  2. Step 2: Convert to fraction form
    21,911.04/30,235.68 = 12,477.84/x
  3. Step 3: Cross multiply
    21,911.04x = 30,235.68 × 12,477.84
  4. Step 4: Simplify right side
    21,911.04x = 377,275,977.33
  5. Step 5: Solve for x
    x = 377,275,977.33/21,911.04
  6. Step 6: Final answer
    x = 17,218.53

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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.