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Finding the Fourth Proportional to 18,998.70, 28,526.85 and 14,621.10

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Solution

The fourth proportional to 18,998.70, 28,526.85 and 14,621.10 is: 21,953.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.70 : 28,526.85 = 14,621.10 : x
  2. Step 2: Convert to fraction form
    18,998.70/28,526.85 = 14,621.10/x
  3. Step 3: Cross multiply
    18,998.70x = 28,526.85 × 14,621.10
  4. Step 4: Simplify right side
    18,998.70x = 417,093,926.54
  5. Step 5: Solve for x
    x = 417,093,926.54/18,998.70
  6. Step 6: Final answer
    x = 21,953.81

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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.