Home / 12,543.48-18,811.38-8,672.76

Finding the Fourth Proportional to 12,543.48, 18,811.38 and 8,672.76

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Solution

The fourth proportional to 12,543.48, 18,811.38 and 8,672.76 is: 13,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.48 : 18,811.38 = 8,672.76 : x
  2. Step 2: Convert to fraction form
    12,543.48/18,811.38 = 8,672.76/x
  3. Step 3: Cross multiply
    12,543.48x = 18,811.38 × 8,672.76
  4. Step 4: Simplify right side
    12,543.48x = 163,146,584.01
  5. Step 5: Solve for x
    x = 163,146,584.01/12,543.48
  6. Step 6: Final answer
    x = 13,006.48

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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.