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Finding the Fourth Proportional to 18,671.98, 28,010.70 and 6,826.34

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Solution

The fourth proportional to 18,671.98, 28,010.70 and 6,826.34 is: 10,240.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.98 : 28,010.70 = 6,826.34 : x
  2. Step 2: Convert to fraction form
    18,671.98/28,010.70 = 6,826.34/x
  3. Step 3: Cross multiply
    18,671.98x = 28,010.70 × 6,826.34
  4. Step 4: Simplify right side
    18,671.98x = 191,210,561.84
  5. Step 5: Solve for x
    x = 191,210,561.84/18,671.98
  6. Step 6: Final answer
    x = 10,240.51

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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.