Home / 12,543.66-18,818.37-4,223.45

Finding the Fourth Proportional to 12,543.66, 18,818.37 and 4,223.45

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Solution

The fourth proportional to 12,543.66, 18,818.37 and 4,223.45 is: 6,336.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.66 : 18,818.37 = 4,223.45 : x
  2. Step 2: Convert to fraction form
    12,543.66/18,818.37 = 4,223.45/x
  3. Step 3: Cross multiply
    12,543.66x = 18,818.37 × 4,223.45
  4. Step 4: Simplify right side
    12,543.66x = 79,478,491.82
  5. Step 5: Solve for x
    x = 79,478,491.82/12,543.66
  6. Step 6: Final answer
    x = 6,336.15

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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.