Home / 12,543.93-18,818.78-4,223.75

Finding the Fourth Proportional to 12,543.93, 18,818.78 and 4,223.75

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Solution

The fourth proportional to 12,543.93, 18,818.78 and 4,223.75 is: 6,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.93 : 18,818.78 = 4,223.75 : x
  2. Step 2: Convert to fraction form
    12,543.93/18,818.78 = 4,223.75/x
  3. Step 3: Cross multiply
    12,543.93x = 18,818.78 × 4,223.75
  4. Step 4: Simplify right side
    12,543.93x = 79,485,706.81
  5. Step 5: Solve for x
    x = 79,485,706.81/12,543.93
  6. Step 6: Final answer
    x = 6,336.59

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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.