Home / 21,977.04-30,329.40-12,287.82

Finding the Fourth Proportional to 21,977.04, 30,329.40 and 12,287.82

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Solution

The fourth proportional to 21,977.04, 30,329.40 and 12,287.82 is: 16,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.04 : 30,329.40 = 12,287.82 : x
  2. Step 2: Convert to fraction form
    21,977.04/30,329.40 = 12,287.82/x
  3. Step 3: Cross multiply
    21,977.04x = 30,329.40 × 12,287.82
  4. Step 4: Simplify right side
    21,977.04x = 372,682,207.91
  5. Step 5: Solve for x
    x = 372,682,207.91/21,977.04
  6. Step 6: Final answer
    x = 16,957.80

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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.