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Finding the Fourth Proportional to 18,998.41, 28,498.11 and 9,000.82

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Solution

The fourth proportional to 18,998.41, 28,498.11 and 9,000.82 is: 13,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.41 : 28,498.11 = 9,000.82 : x
  2. Step 2: Convert to fraction form
    18,998.41/28,498.11 = 9,000.82/x
  3. Step 3: Cross multiply
    18,998.41x = 28,498.11 × 9,000.82
  4. Step 4: Simplify right side
    18,998.41x = 256,506,253.45
  5. Step 5: Solve for x
    x = 256,506,253.45/18,998.41
  6. Step 6: Final answer
    x = 13,501.46

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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.