Home / 12,385.56-18,578.16-4,989.84

Finding the Fourth Proportional to 12,385.56, 18,578.16 and 4,989.84

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Solution

The fourth proportional to 12,385.56, 18,578.16 and 4,989.84 is: 7,484.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.56 : 18,578.16 = 4,989.84 : x
  2. Step 2: Convert to fraction form
    12,385.56/18,578.16 = 4,989.84/x
  3. Step 3: Cross multiply
    12,385.56x = 18,578.16 × 4,989.84
  4. Step 4: Simplify right side
    12,385.56x = 92,702,045.89
  5. Step 5: Solve for x
    x = 92,702,045.89/12,385.56
  6. Step 6: Final answer
    x = 7,484.69

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Similar ratio
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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.