Home / 21,866.04-30,177.90-12,306.42

Finding the Fourth Proportional to 21,866.04, 30,177.90 and 12,306.42

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Solution

The fourth proportional to 21,866.04, 30,177.90 and 12,306.42 is: 16,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.04 : 30,177.90 = 12,306.42 : x
  2. Step 2: Convert to fraction form
    21,866.04/30,177.90 = 12,306.42/x
  3. Step 3: Cross multiply
    21,866.04x = 30,177.90 × 12,306.42
  4. Step 4: Simplify right side
    21,866.04x = 371,381,912.12
  5. Step 5: Solve for x
    x = 371,381,912.12/21,866.04
  6. Step 6: Final answer
    x = 16,984.42

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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.