Home / 15,868.85-21,848.94-12,079.80

Finding the Fourth Proportional to 15,868.85, 21,848.94 and 12,079.80

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Solution

The fourth proportional to 15,868.85, 21,848.94 and 12,079.80 is: 16,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.85 : 21,848.94 = 12,079.80 : x
  2. Step 2: Convert to fraction form
    15,868.85/21,848.94 = 12,079.80/x
  3. Step 3: Cross multiply
    15,868.85x = 21,848.94 × 12,079.80
  4. Step 4: Simplify right side
    15,868.85x = 263,930,825.41
  5. Step 5: Solve for x
    x = 263,930,825.41/15,868.85
  6. Step 6: Final answer
    x = 16,632.01

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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.