Home / 12,122.58-18,186.84-4,223.98

Finding the Fourth Proportional to 12,122.58, 18,186.84 and 4,223.98

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Solution

The fourth proportional to 12,122.58, 18,186.84 and 4,223.98 is: 6,337.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.58 : 18,186.84 = 4,223.98 : x
  2. Step 2: Convert to fraction form
    12,122.58/18,186.84 = 4,223.98/x
  3. Step 3: Cross multiply
    12,122.58x = 18,186.84 × 4,223.98
  4. Step 4: Simplify right side
    12,122.58x = 76,820,848.42
  5. Step 5: Solve for x
    x = 76,820,848.42/12,122.58
  6. Step 6: Final answer
    x = 6,337.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.