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Finding the Fourth Proportional to 18,699.42, 28,041.84 and 7,006.26

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Solution

The fourth proportional to 18,699.42, 28,041.84 and 7,006.26 is: 10,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.42 : 28,041.84 = 7,006.26 : x
  2. Step 2: Convert to fraction form
    18,699.42/28,041.84 = 7,006.26/x
  3. Step 3: Cross multiply
    18,699.42x = 28,041.84 × 7,006.26
  4. Step 4: Simplify right side
    18,699.42x = 196,468,421.92
  5. Step 5: Solve for x
    x = 196,468,421.92/18,699.42
  6. Step 6: Final answer
    x = 10,506.66

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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.