Home / 12,156.39-18,234.57-4,365.21

Finding the Fourth Proportional to 12,156.39, 18,234.57 and 4,365.21

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Solution

The fourth proportional to 12,156.39, 18,234.57 and 4,365.21 is: 6,547.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.39 : 18,234.57 = 4,365.21 : x
  2. Step 2: Convert to fraction form
    12,156.39/18,234.57 = 4,365.21/x
  3. Step 3: Cross multiply
    12,156.39x = 18,234.57 × 4,365.21
  4. Step 4: Simplify right side
    12,156.39x = 79,597,727.31
  5. Step 5: Solve for x
    x = 79,597,727.31/12,156.39
  6. Step 6: Final answer
    x = 6,547.81

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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.